{"id":9231,"date":"2016-05-29T12:25:48","date_gmt":"2016-05-29T16:25:48","guid":{"rendered":"http:\/\/cscircles.cemc.uwaterloo.ca\/?page_id=9231"},"modified":"2017-06-28T15:43:26","modified_gmt":"2017-06-28T19:43:26","slug":"zh-6","status":"publish","type":"page","link":"https:\/\/cscircles.cemc.uwaterloo.ca\/dev\/zh-6\/","title":{"rendered":"6: \u5982\u679c"},"content":{"rendered":"<!-- Please retain this notice and add more notes if you create a new version.<br \/>\nOriginal lesson author: David Pritchard, daveagp@gmail.com, http:\/\/cscircles.ca<br \/>\nLicense: http:\/\/creativecommons.org\/licenses\/by-nc-sa\/3.0\/-->\n<p>\u76f4\u5230\u73b0\u5728\uff0c\u6211\u4eec\u6240\u5b66\u7684\u6240\u6709\u7a0b\u5e8f\u90fd\u662f\u4e00\u884c\u4e00\u884c\u5730\u6267\u884c\u4ee3\u7801\u3002\u4e2d\u95f4\u4e0d\u8df3\u8fc7\u4efb\u4f55\u4e00\u884c\u3002\u4e0b\u9762\u662f\u4e00\u4e2a\u4f8b\u5b50\uff1a\u901a\u8fc7\u952e\u76d8\u65b9\u5411\u952e\u6216\u6eda\u52a8\u8f74\u6765\u67e5\u770b\u6bcf\u884c\u4ee3\u7801\u3002<\/p>\n<p><iframe width='100%' height='480' frameborder='0' scrolling='no' src='https:\/\/cscircles.cemc.uwaterloo.ca\/dev\/wp-content\/plugins\/pybox\/OnlinePythonTutor3-cemc\/iframe-embed.html#code=birthYear+%3D+1982%0AcurrentYear+%3D+2013%0Aage+%3D+currentYear+-+birthYear%0Aprint%28%27You+are%27%2C+age%2C+%27years+old%27%29&cumulative=false&heapPrimitives=false&drawParentPointers=false&textReferences=false&showOnlyOutputs=false&py=3&curInstr=0&resizeContainer=true&highlightLines&width=400&rightStdout=1'><\/iframe><\/p>\n<p>\u8fd9\u8282\u8bfe\u6211\u4eec\u8981\u5b66\u4e00\u4e2a\u65b0\u5185\u5bb9\uff0c<strong>\u6761\u4ef6\u4ece\u53e5<\/strong>\u3002\u6761\u4ef6\u4ece\u53e5\u6307\u5728\u4e00\u5b9a\u6761\u4ef6\u88ab\u6ee1\u8db3\u7684\u60c5\u51b5\u4e0b\uff0c\u67d0\u4e9b\u7a0b\u5e8f\u8fd0\u884c\uff0c\u800c\u5728\u4e0d\u88ab\u6ee1\u8db3\u7684\u60c5\u51b5\u4e0b\uff0c\u67d0\u4e9b\u7a0b\u5e8f\u4e0d\u8fd0\u884c\u3002\u6bd4\u5982\u8bf4\uff0c\u6211\u4eec\u5c06\u4ee5\u4e0b\u7a0b\u5e8f\u505a\u66f4\u6539\uff1a\u5f53\u4e00\u4e2a\u4eba\u7684\u5e74\u9f84\u8db3\u591f\u5927\u65f6\uff0c\u8f93\u51fa\u4e00\u4e2a\u989d\u5916\u7684\u4fe1\u606f\u3002\u90a3\u4e48\u6211\u4eec\u9700\u8981\u52a0\u4e24\u884c\uff1a<code>if age &gt; 65:<\/code>\u00a0(\u610f\u601d\u662f\"\u5982\u679c<code>\u5e74\u9f84<\/code>\u5927\u4e8e65\u5c81\") \u548c<code>\u00a0 print('Enjoy retirement!')<\/code>\u3002\u73b0\u5728\u6211\u4eec\u6765\u518d\u6b21\u6309\u884c\u8fd0\u884c\u4e00\u4e0b\u7a0b\u5e8f\uff1a<\/p>\n<p><iframe width='100%' height='480' frameborder='0' scrolling='no' src='https:\/\/cscircles.cemc.uwaterloo.ca\/dev\/wp-content\/plugins\/pybox\/OnlinePythonTutor3-cemc\/iframe-embed.html#code=birthYear+%3D+1982%0AcurrentYear+%3D+2013%0Aage+%3D+currentYear+-+birthYear%0Aif+age+%3E+65%3A%0A+++print%28%27Enjoy+retirement%21%27%29%0Aprint%28%27You+are%27%2C+age%2C+%27years+old%27%29&cumulative=false&heapPrimitives=false&drawParentPointers=false&textReferences=false&showOnlyOutputs=false&py=3&curInstr=0&resizeContainer=true&highlightLines&width=400&rightStdout=1'><\/iframe><\/p>\n<p>\u8fd9\u91cc\u8981\u6ce8\u610f\uff0cprint\u8bed\u53e5\u88ab<strong>\u8df3\u8fc7\u4e86<\/strong>\u56e0\u4e3a<code>age<\/code>\u53ea\u670931\uff01 \u90a3\u4e48\u628a<code>\u51fa\u751f\u5e74\u4efd<\/code>\u6539\u4e3a1928\uff0c<strong>\u540c\u6837\u7684\u7a0b\u5e8f<\/strong>\u518d\u6b21\u8fd0\u884c \u53c8\u4f1a\u662f\u4ec0\u4e48\u7ed3\u679c\u5462\uff1f<\/p>\n<p><iframe width='100%' height='480' frameborder='0' scrolling='no' src='https:\/\/cscircles.cemc.uwaterloo.ca\/dev\/wp-content\/plugins\/pybox\/OnlinePythonTutor3-cemc\/iframe-embed.html#code=birthYear+%3D+1928%0AcurrentYear+%3D+2013%0Aage+%3D+currentYear+-+birthYear%0Aif+age+%3E+65%3A%0A+++print%28%27Enjoy+retirement%21%27%29%0Aprint%28%27You+are%27%2C+age%2C+%27years+old%27%29&cumulative=false&heapPrimitives=false&drawParentPointers=false&textReferences=false&showOnlyOutputs=false&py=3&curInstr=0&resizeContainer=true&highlightLines&width=400&rightStdout=1'><\/iframe><\/p>\n<p>\u6ce8\u610f\u5230\u533a\u522b\u4e86\u4e48\uff1f\u540e\u4e00\u4e2a\u7a0b\u5e8f(<code>age<\/code>\u662f<code><\/code>85\u7684)\u6253\u5370\u51fa\u4e86\u4e24\u884c\uff0c\u6ca1\u6709\u8df3\u8fc7\u4efb\u4f55\u4e00\u884c\u3002\u8fd9\u5c31\u662f<strong>if statement<\/strong>\u7684\u76ee\u7684\uff1a\u5148\u68c0\u67e5\u4e00\u4e9b\u6761\u4ef6(<code>age<\/code>\u5927\u4e8e65\u4e48\uff1f)\uff0c\u53ea\u6709\u5f53\u8fd9\u4e9b\u6761\u4ef6\u6210\u7acb\u65f6\u518d\u8fd0\u884c\u67d0\u4e9b\u7a0b\u5e8f (\u6253\u5370<code>Enjoy retirement!<\/code>)\u3002<\/p>\n<p>\u6211\u4eec\u628a\u88ab\u68c0\u67e5\u7684\u6761\u4ef6\u53eb\u505a<strong>condition<\/strong>\uff0c\u628a\u5982\u679c\u6761\u4ef6\u6210\u7acb\u5219\u8fd0\u884c\u7684\u7a0b\u5e8f\u53eb\u505a<strong>body<\/strong>\u3002Body\u9700\u8981\u88ab<strong>\u7f29\u8fdb<\/strong>\uff0c\u4e5f\u5c31\u662f\u8bf4\uff0c\u5728\u8fd9\u4e00\u884c\u7684\u5f00\u5934\u9700\u8981\u6709\u4e00\u4e9b\u989d\u5916\u7684\u7a7a\u683c(\u53c2\u8003\u4ee5\u4e0a\u4ee3\u7801)\u3002Body\u53ef\u4ee5\u5305\u542b\u4e0d\u6b62\u4e00\u4e2a\u8bed\u53e5\uff1a\u591a\u5199\u51e0\u884c\u7f29\u8fdb\u7684\u7a0b\u5e8f\u5373\u53ef\u8fbe\u5230\u6b64\u76ee\u7684\u3002\u4e0b\u9762\u662f\u4e00\u4e2a\u4f8b\u5b50\u3002<\/p>\n<p><iframe width='100%' height='480' frameborder='0' scrolling='no' src='https:\/\/cscircles.cemc.uwaterloo.ca\/dev\/wp-content\/plugins\/pybox\/OnlinePythonTutor3-cemc\/iframe-embed.html#code=birthYear+%3D+1928%0AcurrentYear+%3D+2013%0Aage+%3D+currentYear+-+birthYear%0Aif+age+%3E+65%3A%0A++++print%28%27Enjoy+retirement%21%27%29%0A++++print%28%27You+turn+100+in%27%2C+100%2BbirthYear%29%0Aprint%28%27You+are%27%2C+age%2C+%27years+old%27%29&cumulative=false&heapPrimitives=false&drawParentPointers=false&textReferences=false&showOnlyOutputs=false&py=3&curInstr=0&resizeContainer=true&highlightLines&width=480&rightStdout=1'><\/iframe><\/p>\n<ul>\n<li>\u5728<a href=\"https:\/\/cscircles.cemc.uwaterloo.ca\/dev\/console\/?consolecode=birthYear%20%3D%201928%0AcurrentYear%20%3D%202013%0Aage%20%3D%20currentYear%20-%20birthYear%0Aif%20age%20%3E%2065%3A%0A%20%20%20%20print%28%27Enjoy%20retirement%21%27%29%0A%20%20%20%20print%28%27You%20turn%20100%20in%27%2C%20100%2BbirthYear%29%0Aprint%28%27You%20are%27%2C%20age%2C%20%27years%20old%27%29%0A\" target=\"_blank\">\u63a7\u5236\u53f0<\/a>\u6216\u89c2\u5bdf\u4eea\u4e2d\u8fd0\u884c\u6b64\u7a0b\u5e8f\uff0c\u5176\u4e2d\u51fa\u751f\u5e74\u4efd\u4e3a1982\u5e74\u3002\u4e24\u4e2a\u7f29\u8fdb\u7684\u884c\u90fd\u88ab\u8df3\u8fc7\u4e86\u3002<\/li>\n<\/ul>\n<p>\u5728\u4e0b\u4e00\u4e2a\u7ec3\u4e60\u4e2d\uff0c\u4f60\u9700\u8981\u5199\u4e00\u4e2a\u6709\u5173\u5e03\u5c14\u6bd4\u8f83\u7684\u7a0b\u5e8f\u3002\u5728\u4e0a\u9762\u7684\u90a3\u4e2a\u4f8b\u5b50\u4e2d\u6211\u4eec\u5df2\u7ecf\u770b\u5230\u4e86\"<code>if x &gt; y:<\/code>\"\u610f\u5473\u7740\"\u5982\u679c<code>x<\/code>\u5927\u4e8e<code>y<\/code>\"\u3002\u4e0b\u9762\u7684\u7a0b\u5e8f\u53ef\u80fd\u4f1a\u6709\u5e2e\u52a9\uff1a<\/p>\n<ul>\n<li><code>if x &lt; y:<\/code>\u8868\u793a\"\u5982\u679cx\u5c0f\u4e8ey\"<\/li>\n<li><code>if x &gt;= y:<\/code>\u8868\u793a\"\u5982\u679cx\u5927\u4e8e\u7b49\u4e8ey\"<\/li>\n<li><code>if x &lt;= y:<\/code>\u8868\u793a\"\u5982\u679cx\u5c0f\u4e8e\u7b49\u4e8ey\"<\/li>\n<\/ul>\n<p><form class=\"pbform\" action=\"#\" id=\"pbform0\" method=\"POST\">\n<div class='pybox modeNeutral ' id='pybox0'>\n<img title='You have not yet completed this problem.' src='https:\/\/cscircles.cemc.uwaterloo.ca\/dev\/wp-content\/plugins\/pybox\/files\/icon.png' class='pycheck'\/><div class=\"heading\"><span class='type'>Coding Exercise: <\/span><span class='title'>IHOPython<\/span><\/div>\u5199\u4e00\u4e2a\u7a0b\u5e8f\uff1a\u901a\u8fc7<code>pancakes = int(input())<\/code>\u8f93\u5165\u4e00\u4e2a\u6574\u6570\u3002\u5982\u679c<code>pancakes<\/code>\u5927\u4e8e3\uff0c\u6253\u5370<code>Yum!<\/code>\uff1b\u5982\u679c<code>pancakes<\/code>\u5c0f\u4e8e\u7b49\u4e8e3\uff0c\u6253\u5370<code>Still hungry!<\/code>\u3002<a class=\"hintlink\"  id=\"hintlink1\">\u63d0\u793a<\/a><div class=\"helpOuter\" style=\"display: none;\"><div class=\"helpInner\"><div style=\"text-align: center\">You need to create an account and log in to ask a question.<\/div><\/div><\/div><div class='pyboxTextwrap pyboxCodewrap RW resizy'  style='height: 526px;'><textarea wrap='off' name='usercode0' id='usercode0'  cols=10 rows=20   class='pyboxCode RW'>\n<\/textarea><\/div>\n<div id='pbhistory0' class='flexcontain' style='display:none;'><\/div>\n<div class='pyboxbuttons'><table><tr>\n<td><input type='submit' name='submit' id='submit0' value=' '\/><\/td>\n<td><input type='button' name='consolecopy' value=\"Open in console\" onclick=\"pbConsoleCopy(0)\" ><\/td>\n<td><input type='button' name='visualize' value=\"Visualize\" onclick=\"pbVisualize(0,'N')\" ><\/td>\n<td><input type='button' name='history' value=\"History\" onclick=\"historyClick(0,'6.ihop')\" ><\/td>\n<\/tr><\/table><select id='pbSelect0' class='selectmore'><option name='more'>More actions...<\/option>\n<option name='help' data-pbonclick=\"helpClick(0);\" >Help<\/option>\n<\/select><\/div>\n<input type=\"hidden\" name=\"lang\" value=\"\"\/><input type=\"hidden\" id=\"inputInUse0\" name=\"inputInUse\" value=\"Y\"\/>\n<input type=\"hidden\" name=\"pyId\" value=\"0\"\/>\n<input type=\"hidden\" name=\"hash\" value=\"41127aa9bb8f0bf880f03ca38bb86efd\"\/>\n<div id='pbresults0' class='pbresults avoidline'><\/div>\n<\/div>\n<\/form>\n<script type='text\/javascript'>jQuery(function(){pbToggleCodeMirror(0);});document.getElementById(\"submit0\").value = \"Run program\";document.getElementById(\"inputInUse0\").value = \"N\";<\/script>\n<\/p>\n<h2>\u6761\u4ef6\u8bed\u53e5\u7684\u683c\u5f0f<\/h2>\n<ul>\n<li>\u7b2c\u4e00\u884c,\n<pre>if \u00abcondition\u00bb:<\/pre>\u6709\u4e09\u4e2a\u90e8\u5206\uff1a<code>if<\/code>\uff0c<code>\u00ab<span style=\"line-height: 22px;\">condition<\/span>\u00bb<\/code>\u5fc5\u987b\u662f\u4e00\u4e2a\u662f\u5426\u5224\u65ad(\u4e0b\u9762\u4f1a\u6709\u8be6\u7ec6\u4ecb\u7ecd)\uff0c\u4ee5\u53ca\u5192\u53f7<code>:<\/code><\/li>\n<li>\u7136\u540e\u5c31\u662f\u7531\u4e00\u884c\u6216\u591a\u884c\u7f29\u8fdb\u7ec4\u6210\u7684body\u3002\u7a7a\u683c\u591a\u5c11(\u7f29\u8fdb\u7684\u591a\u5c11)\u4e0d\u91cd\u8981, \u4f46\u662f\u7f29\u8fdb\u5982\u679c\u4e0d\u4e00\u81f4<a href=\"https:\/\/cscircles.cemc.uwaterloo.ca\/dev\/console\/?consolecode=birthYear%20%3D%201928%0AcurrentYear%20%3D%202013%0Aage%20%3D%20currentYear%20-%20birthYear%0Aif%20age%20%3E%2065%3A%0A%20%20print%28%27Enjoy%20retirement%21%27%29%0A%20%20%20%20print%28%27You%20turn%20100%20in%27%2C%20100%2BbirthYear%29%0Aprint%28%27You%20are%27%2C%20age%2C%20%27years%20old%27%29%0A\" target=\"_blank\">\u5c31\u4f1a\u51fa\u73b0\u95ee\u9898<\/a>\u56e0\u4e3aPython\u4f1a\u6839\u636e\u7f29\u8fdb\u7684\u591a\u5c11\u6765\u5224\u65ad\u54ea\u91cc\u662fbody\u5f00\u59cb\uff0c\u54ea\u91cc\u7ed3\u675f\u3002<\/li>\n<\/ul>\n<p>\u6761\u4ef6\u8bed\u53e5\u7684body\u90e8\u5206\u5c31\u5c5e\u4e8e\u7f16\u7a0b\u201cblock\u201d\u3002\u5728\u4e4b\u540e\u7684\u5b66\u4e60\u4e2d\uff0c\u6211\u4eec\u4f1a\u7ecf\u5e38\u770b\u5230Blocks\uff0c\u6bd4\u5982\"for loops\"\u4ee5\u53ca\u7f16\u5199\u81ea\u5df1\u7684\u7a0b\u5e8f\u3002(\u67d0\u4e9b\u5176\u4ed6\u7684\u8ba1\u7b97\u673a\u8bed\u8a00\u5728block\u4e24\u8fb9\u52a0\u4e0a\u5927\u62ec\u53f7<code><code>{}<\/code><\/code>.)<\/p>\n<p>\u4e0b\u4e00\u4e2a\u7ec3\u4e60\u5176\u5b9e\u662f\u5408\u56db\u4e2a\u7ec3\u4e60\u4e3a\u4e00\u3002\u901a\u8fc7\u6539\u53d8\u7a0b\u5e8f\u4e2d\u5404\u884c\u7684\u987a\u5e8f\u53ef\u4ee5\u5f97\u5230\u4e0d\u540c\u7684\u7ed3\u679c\u3002<em>\u70b9\u51fb\u6bcf\u4e00\u884c\u6765\u6253\u5f00\uff1b\u70b9\u5f00\u7684\u987a\u5e8f\u968f\u610f\u3002\u548c\u4ee5\u524d\u4e00\u6837\uff0c\u62d6\u62fd\u6bcf\u4e00\u884c\u6765\u6539\u53d8\u987a\u5e8f\u3002<\/em><\/p>\n<div class=\"accordion\"><br \/>\n<div class='collapseContain hiding'>\n<div class='collapseHead'><span class='icon'><\/span>\n\u7b2c1\u90e8\u5206:\u672a\u6599\u5230\u7684\u7f29\u8fdb\n<\/div>\n<div class='collapseBody'><form class=\"pbform\" action=\"#\" id=\"pbform2\" method=\"POST\">\n<div class='pybox modeNeutral scramble' id='pybox2'>\n<img title='You have not yet completed this problem.' src='https:\/\/cscircles.cemc.uwaterloo.ca\/dev\/wp-content\/plugins\/pybox\/files\/icon.png' class='pycheck'\/><div class=\"heading\"><span class='type'>Scramble Exercise: <\/span><span class='title'>\u672a\u6599\u5230\u7684\u7f29\u8fdb<\/span><\/div>\u4e0b\u5217\u9519\u8bef\u4f1a\u51fa\u73b0\uff1a<\/p>\n<pre>IndentationError: unexpected indent<\/pre><ul class=\"pyscramble\" name=\"pyscramble\" id=\"pyscramble2\">\n <li class=\"pyscramble\">if 1000 &lt; 10:<\/li>\n <li class=\"pyscramble\">   print(&quot;message 1&quot;)<\/li>\n <li class=\"pyscramble\">  print(&quot;message 2&quot;)<\/li>\n <li class=\"pyscramble\">if 2 &gt; 1:<\/li>\n <li class=\"pyscramble\">  print(&quot;message 3&quot;)<\/li>\n<\/ul>\n<input type='hidden' id='usercode2' name='usercode2'\/>\n<div id='pbhistory2' class='flexcontain' style='display:none;'><\/div>\n<div class='pyboxbuttons'><table><tr>\n<td><input type='submit' name='submit' id='submit2' value=' '\/><\/td>\n<\/tr><\/table><\/div>\n<input type=\"hidden\" name=\"lang\" value=\"\"\/><input type=\"hidden\" id=\"inputInUse2\" name=\"inputInUse\" value=\"Y\"\/>\n<input type=\"hidden\" name=\"pyId\" value=\"2\"\/>\n<input type=\"hidden\" name=\"hash\" value=\"a1297dd0c42a3c0754e129eeaff8f6f6\"\/>\n<div id='pbresults2' class='pbresults'><\/div>\n<\/div>\n<\/form>\n<script type='text\/javascript'>document.getElementById(\"submit2\").value = \"Run program\";document.getElementById(\"inputInUse2\").value = \"N\";<\/script>\n<\/div><\/div><div class='collapseContain hiding'>\n<div class='collapseHead'><span class='icon'><\/span>\n\u7b2c2\u90e8\u5206: \u672a\u6599\u5230\u7684\u672a\u7f29\u8fdb\n<\/div>\n<div class='collapseBody'><form class=\"pbform\" action=\"#\" id=\"pbform3\" method=\"POST\">\n<div class='pybox modeNeutral scramble' id='pybox3'>\n<img title='You have not yet completed this problem.' src='https:\/\/cscircles.cemc.uwaterloo.ca\/dev\/wp-content\/plugins\/pybox\/files\/icon.png' class='pycheck'\/><div class=\"heading\"><span class='type'>Scramble Exercise: <\/span><span class='title'>\u672a\u7f29\u8fdb<\/span><\/div>\u4e0b\u5217\u9519\u8bef\u4f1a\u51fa\u73b0\uff1a<\/p>\n<pre>IndentationError: unindent does not match any outer indentation level<\/pre><ul class=\"pyscramble\" name=\"pyscramble\" id=\"pyscramble3\">\n <li class=\"pyscramble\">if 1000 &lt; 10:<\/li>\n <li class=\"pyscramble\">  print(&quot;message 2&quot;)<\/li>\n <li class=\"pyscramble\">if 2 &gt; 1:<\/li>\n <li class=\"pyscramble\">  print(&quot;message 3&quot;)<\/li>\n <li class=\"pyscramble\">   print(&quot;message 1&quot;)<\/li>\n<\/ul>\n<input type='hidden' id='usercode3' name='usercode3'\/>\n<div id='pbhistory3' class='flexcontain' style='display:none;'><\/div>\n<div class='pyboxbuttons'><table><tr>\n<td><input type='submit' name='submit' id='submit3' value=' '\/><\/td>\n<\/tr><\/table><\/div>\n<input type=\"hidden\" name=\"lang\" value=\"\"\/><input type=\"hidden\" id=\"inputInUse3\" name=\"inputInUse\" value=\"Y\"\/>\n<input type=\"hidden\" name=\"pyId\" value=\"3\"\/>\n<input type=\"hidden\" name=\"hash\" value=\"f177ed9f1a05e507c5b2c41690c598c6\"\/>\n<div id='pbresults3' class='pbresults'><\/div>\n<\/div>\n<\/form>\n<script type='text\/javascript'>document.getElementById(\"submit3\").value = \"Run program\";document.getElementById(\"inputInUse3\").value = \"N\";<\/script>\n<\/div><\/div><div class='collapseContain hiding'>\n<div class='collapseHead'><span class='icon'><\/span>\n\u7b2c3\u90e8\u5206\uff1a\u5e94\u7f29\u8fdb\u800c\u672a\u7f29\u8fdb\n<\/div>\n<div class='collapseBody'><form class=\"pbform\" action=\"#\" id=\"pbform4\" method=\"POST\">\n<div class='pybox modeNeutral scramble' id='pybox4'>\n<img title='You have not yet completed this problem.' src='https:\/\/cscircles.cemc.uwaterloo.ca\/dev\/wp-content\/plugins\/pybox\/files\/icon.png' class='pycheck'\/><div class=\"heading\"><span class='type'>Scramble Exercise: <\/span><span class='title'>\u5e94\u7f29\u8fdb<\/span><\/div>\u4e0b\u5217\u9519\u8bef\u4f1a\u51fa\u73b0:<\/p>\n<pre>IndentationError: expected an indented block<\/pre><ul class=\"pyscramble\" name=\"pyscramble\" id=\"pyscramble4\">\n <li class=\"pyscramble\">if 1000 &lt; 10:<\/li>\n <li class=\"pyscramble\">   print(&quot;message 1&quot;)<\/li>\n <li class=\"pyscramble\">  print(&quot;message 2&quot;)<\/li>\n <li class=\"pyscramble\">if 2 &gt; 1:<\/li>\n <li class=\"pyscramble\">  print(&quot;message 3&quot;)<\/li>\n<\/ul>\n<input type='hidden' id='usercode4' name='usercode4'\/>\n<div id='pbhistory4' class='flexcontain' style='display:none;'><\/div>\n<div class='pyboxbuttons'><table><tr>\n<td><input type='submit' name='submit' id='submit4' value=' '\/><\/td>\n<\/tr><\/table><\/div>\n<input type=\"hidden\" name=\"lang\" value=\"\"\/><input type=\"hidden\" id=\"inputInUse4\" name=\"inputInUse\" value=\"Y\"\/>\n<input type=\"hidden\" name=\"pyId\" value=\"4\"\/>\n<input type=\"hidden\" name=\"hash\" value=\"e2d77c9cab3f610fd1806d6b9fccd0dc\"\/>\n<div id='pbresults4' class='pbresults'><\/div>\n<\/div>\n<\/form>\n<script type='text\/javascript'>document.getElementById(\"submit4\").value = \"Run program\";document.getElementById(\"inputInUse4\").value = \"N\";<\/script>\n<\/div><\/div><div class='collapseContain hiding'>\n<div class='collapseHead'><span class='icon'><\/span>\n\u7b2c4\u90e8\u5206\uff1a\u6b63\u786e\u7684\u7f29\u8fdb\n<\/div>\n<div class='collapseBody'><form class=\"pbform\" action=\"#\" id=\"pbform5\" method=\"POST\">\n<div class='pybox modeNeutral scramble' id='pybox5'>\n<img title='You have not yet completed this problem.' src='https:\/\/cscircles.cemc.uwaterloo.ca\/dev\/wp-content\/plugins\/pybox\/files\/icon.png' class='pycheck'\/><div class=\"heading\"><span class='type'>Scramble Exercise: <\/span><span class='title'>\u6b63\u786e\u7684\u7f29\u8fdb<\/span><\/div>\u4e0d\u4f1a\u6709\u9519\u8bef!<ul class=\"pyscramble\" name=\"pyscramble\" id=\"pyscramble5\">\n <li class=\"pyscramble\">if 1000 &lt; 10:<\/li>\n <li class=\"pyscramble\">   print(&quot;message 1&quot;)<\/li>\n <li class=\"pyscramble\">  print(&quot;message 2&quot;)<\/li>\n <li class=\"pyscramble\">if 2 &gt; 1:<\/li>\n <li class=\"pyscramble\">  print(&quot;message 3&quot;)<\/li>\n<\/ul>\n<input type='hidden' id='usercode5' name='usercode5'\/>\n<div id='pbhistory5' class='flexcontain' style='display:none;'><\/div>\n<div class='pyboxbuttons'><table><tr>\n<td><input type='submit' name='submit' id='submit5' value=' '\/><\/td>\n<\/tr><\/table><\/div>\n<input type=\"hidden\" name=\"lang\" value=\"\"\/><input type=\"hidden\" id=\"inputInUse5\" name=\"inputInUse\" value=\"Y\"\/>\n<input type=\"hidden\" name=\"pyId\" value=\"5\"\/>\n<input type=\"hidden\" name=\"hash\" value=\"e52dcb5a8d8ddba08a6d5295282b3868\"\/>\n<div id='pbresults5' class='pbresults'><\/div>\n<\/div>\n<\/form>\n<script type='text\/javascript'>document.getElementById(\"submit5\").value = \"Run program\";document.getElementById(\"inputInUse5\").value = \"N\";<\/script>\n<\/div><\/div><\/div>\n<h3>\u5bf9\uff0c\u9519\u4ee5\u53ca<code>\u5e03\u5c14<\/code><\/h3>\n<p>\u5230\u76ee\u524d\u4e3a\u6b62\uff0c\u5728<code>if<\/code>\u8bed\u53e5\u91cc\u9762\u7684<code>\u00abcondition\u00bb<\/code>\u90e8\u5206\uff0c\u6211\u4eec\u89c1\u5230\u4e86\u5f88\u7b80\u5355\u7684\u6570\u5b57\u5927\u5c0f\u7684\u6bd4\u8f83<code>x &gt; y<\/code>\uff0c\u5f53<code>x<\/code>\u5927\u4e8e<code>y<\/code>\u65f6\u8fd9\u4e2a\u547d\u9898\u662f\u6b63\u786e\u7684\uff0c\u5f53<code>x<\/code>\u5c0f\u4e8e\u7b49\u4e8e<code>y<\/code>\u65f6\u8fd9\u4e2a\u547d\u9898\u662f\u9519\u8bef\u7684\u3002\u66f4\u901a\u5e38\u5316\u4e00\u4e9b\uff0c\u4efb\u4f55\u7684\u5bf9\uff0f\u9519\u503c\u90fd\u53eb\u505a<strong>Boolean<\/strong> (see\u00a0<a href=\"http:\/\/en.wikipedia.org\/wiki\/George_Boole\">George Boole<\/a>)\u3002\u5728Python\u4e2d\uff0c<code>bool<\/code>\u8868\u793aBoolean values\uff1b\u53ea\u6709\u4e24\u4e2a<code>bool<\/code>\u503c\uff0c<code>True<\/code>\u548c<code>False<\/code><\/p>\n<p><form class=\"pbform\" action=\"#\" id=\"pbform6\" method=\"POST\">\n<div class='pybox modeNeutral  facultative' id='pybox6'>\n<div class=\"heading\"><span class=\"title\">Example<\/span><\/div>Boolean\u8868\u8fbe\u5f0f<div class='pyboxTextwrap pyboxCodewrap RO '  style='height: 110px;'><textarea wrap='off' name='usercode6' id='usercode6'  cols=10 rows=4 readonly='readonly'  style = 'height : 110px;'  class='pyboxCode RO'>\nprint(2&gt;1)\nb = False\nprint(b)\nprint(type(b), type(2&gt;1), type(True))<\/textarea><\/div>\n<div id='pbhistory6' class='flexcontain' style='display:none;'><\/div>\n<div class='pyboxbuttons'><table><tr>\n<td><input type='submit' name='submit' id='submit6' value=' '\/><\/td>\n<td><input type='button' name='consolecopy' value=\"Open in console\" onclick=\"pbConsoleCopy(6)\" ><\/td>\n<td><input type='button' name='visualize' value=\"Visualize\" onclick=\"pbVisualize(6,'N')\" ><\/td>\n<\/tr><\/table><\/div>\n<input type=\"hidden\" name=\"lang\" value=\"\"\/><input type=\"hidden\" id=\"inputInUse6\" name=\"inputInUse\" value=\"Y\"\/>\n<input type=\"hidden\" name=\"pyId\" value=\"6\"\/>\n<input type=\"hidden\" name=\"hash\" value=\"b696c04c9860d8276e0ff89ec3161af2\"\/>\n<div id='pbresults6' class='pbresults'><\/div>\n<\/div>\n<\/form>\n<script type='text\/javascript'>document.getElementById(\"submit6\").value = \"Run program\";document.getElementById(\"inputInUse6\").value = \"N\";<\/script>\n<\/p>\n<p>\u5728Python\u4e2d\uff0c\u5728\u76f4\u63a5\u4f7f\u7528<code>bool<\/code>\u503c<a href=\"https:\/\/cscircles.cemc.uwaterloo.ca\/dev\/console\/?consolecode=print%28true%29\" target=\"_blank\"><code>True<\/code>\u548c<code>False<\/code><\/a>\u65f6\u9700\u8981\u5927\u5199\u7b2c\u4e00\u4e2a\u5b57\u6bcd\uff0c\u5426\u5219\u5c31\u4f1a\u51fa\u9519\u3002<\/p>\n<h3>Boolean\u6bd4\u8f83<\/h3>\n<p>\u8fd0\u7b97\u7b26<code>&gt;<\/code>, <code>&lt;<\/code>, <code>&lt;=<\/code>, \u548c <code>&gt;=<\/code>\u6bd4\u8f83\u4e24\u4e2a\u6570\u5b57\uff0c\u8fd4\u8fd8\u4e00\u4e2a\u5e03\u5c14\u503c\u3002\u8fd8\u6709\u4e24\u4e2a\u65b9\u5f0f\u6765\u6bd4\u8f83\u6570\u5b57\uff1a<\/p>\n<ul>\n<li><code>x == y<\/code>\u662f<strong>\u7b49\u5f0f\u8fd0\u7b97\u7b26<\/strong>, \u5982\u679c<code>xy<\/code>\u76f8\u7b49\uff0c\u5c31\u8fd4\u8fd8<code>True<\/code><\/li>\n<li><code>x != y<\/code>\u662f<strong>\u4e0d\u7b49\u8fd0\u7b97\u7b26<\/strong>, \u5982\u679c<code>x<\/code>\u548c<code>y<\/code>\u4e0d\u76f8\u7b49\uff0c\u8fd4\u8fd8<code>True<\/code><\/li>\n<li><code>==<\/code>\u548c<code>!=<\/code>\u4e5f\u9002\u7528\u4e8e\u5b57\u7b26\u4e32\u7b49\u5176\u4ed6\u7c7b\u578b\u6570\u636e<\/li>\n<\/ul>\n<p>(\u4e24\u4e2a\u7b49\u53f7<code>==<\/code>\u662f\u56e0\u4e3a\u4e00\u4e2a\u7b49\u53f7<code>x = \u00abexpression\u00bb<\/code>\u5df2\u7ecf\u6709\"\u5c06\u53d8\u91cf<code>x<\/code>\u8d4b\u4e88\u00abexpression\u00bb\u503c\u7684\u610f\u4e49\u4e86\u3002\u5c06<code>=<\/code>\u4e0e<code>==<\/code>\u5f04\u6df7\u662f\u4e00\u4e2a\u5e38\u89c1\u7684<a href=\"https:\/\/cscircles.cemc.uwaterloo.ca\/dev\/console\/?consolecode=x%20%3D%201%2B1%0Aif%20x%20%3D%202%3A%20%23should%20be%20%3D%3D%0A%20print%28%22Monkey%22%29\" target=\"_blank\"><\/a><a href=\"https:\/\/cscircles.cemc.uwaterloo.ca\/dev\/console\/?consolecode=n%20%3D%2010%0As%20%3D%3D%20n%2An%20%23should%20be%20%3D\" target=\"_blank\">\u9519\u8bef\u6765\u6e90<\/a>.)<\/p>\n<p>\u4e0b\u9762\u662f\u4e00\u4e2a\u7ec3\u4e60\uff0c\u6211\u4eec\u4f1a\u63a5\u89e6\u5230\u4e00\u79cd\u65b0\u7684\u6bd4\u8f83\u65b9\u5f0f\u3002<br \/>\n<form class=\"pbform\" action=\"#\" id=\"pbform7\" method=\"POST\">\n<div class='pybox modeNeutral ' id='pybox7'>\n<img title='You have not yet completed this problem.' src='https:\/\/cscircles.cemc.uwaterloo.ca\/dev\/wp-content\/plugins\/pybox\/files\/icon.png' class='pycheck'\/><div class=\"heading\"><span class='type'>Coding Exercise: <\/span><span class='title'>\u4f60\u7684\u6807\u8bb0\u662f\u4ec0\u4e48?<\/span><\/div>\u7f16\u5199\u4e00\u4e2a\u7a0b\u5e8f\uff1a\u8f93\u5165\u4e00\u4e2a\u6574\u6570\uff0c\u6839\u636e\u6570\u662f\u662f\u6b63\u7684\uff0c\u8d1f\u7684\uff0c\u8fd8\u662f0\uff0c\u8f93\u51fa<code>Positive<\/code>, <code>Negative<\/code>, or <code>Zero<\/code>\u5176\u4e2d\u7684\u4e00\u4e2a\u3002<div class=\"helpOuter\" style=\"display: none;\"><div class=\"helpInner\"><div style=\"text-align: center\">You need to create an account and log in to ask a question.<\/div><\/div><\/div><div class='pyboxTextwrap pyboxCodewrap RW resizy'  style='height: 526px;'><textarea wrap='off' name='usercode7' id='usercode7'  cols=10 rows=20   class='pyboxCode RW'>\nx=int(input())\n<\/textarea><\/div>\n<div id='pbhistory7' class='flexcontain' style='display:none;'><\/div>\n<div name=\"pyinput\" id=\"pyinput7\">You may enter input for the program in the box below.<div class=\"pyboxTextwrap resizy\" style=\"height: 102px;\" ><textarea wrap=\"off\" name=\"userinput\" class=\"pyboxInput\" cols=10 rows=4><\/textarea><\/div><\/div>\n<input type='hidden' id='defaultCode7' value='x=int(input())\\n'><\/input>\n<div class='pyboxbuttons'><table><tr>\n<td><input type='submit' name='submit' id='submit7' value=' '\/><\/td>\n<td><input type='button' name='switch' id=\"switch7\" value=\"Input Switch\" onclick=\"pbInputSwitch(7,'N')\" ><\/td>\n<td><input type='button' name='consolecopy' value=\"Open in console\" onclick=\"pbConsoleCopy(7)\" ><\/td>\n<td><input type='button' name='visualize' value=\"Visualize\" onclick=\"pbVisualize(7,'N')\" ><\/td>\n<\/tr><\/table><select id='pbSelect7' class='selectmore'><option name='more'>More actions...<\/option>\n<option name='history' data-pbonclick=\"historyClick(7,'6.sign')\" >History<\/option>\n<option name='default' data-pbonclick=\"pbSetText(7,descape($('#defaultCode7').val()))\" >Reset code to default<\/option>\n<option name='help' data-pbonclick=\"helpClick(7);\" >Help<\/option>\n<\/select><\/div>\n<input type=\"hidden\" name=\"lang\" value=\"\"\/><input type=\"hidden\" id=\"inputInUse7\" name=\"inputInUse\" value=\"Y\"\/>\n<input type=\"hidden\" name=\"pyId\" value=\"7\"\/>\n<input type=\"hidden\" name=\"hash\" value=\"44e1df4c4c35ce3ff1dba37b4ef53c51\"\/>\n<div id='pbresults7' class='pbresults avoidline'><\/div>\n<\/div>\n<\/form>\n<script type='text\/javascript'>jQuery(function(){pbToggleCodeMirror(7);});pbInputSwitch(7,\"N\");<\/script>\n<\/p>\n<p>\u6211\u4eec\u521a\u521a\u4ecb\u7ecd\u4e86 block \u7684\u6982\u5ff5 \uff08\u51e0\u884c\u4ee3\u7801\u805a\u5728\u4e00\u8d77\uff0c\u7f29\u8fdb\u540c \u6837\u7684\u7a0b\u5ea6\uff09\u3002\u4f60\u53ef\u4ee5\u5728 block \u91cc\u9762\u5d4c\u5957\u53e6\u4e00\u4e2a block\uff1a<\/p>\n<pre>if password=='openSesame':\r\n \u00a0print('User logged on.')\r\n \u00a0if hour&gt;17:\r\n \u00a0 \u00a0print('Good evening!')\r\n \u00a0print('Enter a command:')<\/pre>\u5728\u8fd9\u91cc\uff0c\u5916\u9762\u7684block\u7531\u56db\u884c\u4ee3\u7801\u7ec4\u6210\uff0c\u91cc\u9762\u7684block\u75311\u884c\u4ee3\u7801\u7ec4\u6210\uff1a<pre>\nif password=='openSesame':  <div style=\"margin:0px 20px; margin:0ch 1.9ch; background: #CCF; border: solid blue 1px; border: solid blue 0.1ch;\">print('User logged on.')<br\/>if hour&gt;17:\n<div style=\"margin:0px 20px; margin: 0ch 1.9ch; background: #FCC; border: solid red 1px; border: solid red 0.1ch;\">print('Good evening!')<\/div>print('Enter a command:')<\/div><\/pre><\/p>\n<p><div class='pybox modeNeutral' id='pybox8'>\n<img title='You have not yet completed this problem.' src='https:\/\/cscircles.cemc.uwaterloo.ca\/dev\/wp-content\/plugins\/pybox\/files\/icon.png' class='pycheck'\/><div class=\"heading\"><span class='type'>Multiple Choice Exercise: <\/span><span class='title'>\u5d4c\u5957<code>\u6761\u4ef6\u8bed\u53e5<\/code><\/span><\/div><div>\u4e0b\u5217\u54ea\u4e00\u4e2a<strong>\u4e0d<\/strong>\u53ef\u80fd\u662f\u8f93\u51fa\u503c?<\/div><label>Your choice: <\/label><select id=\"pyselect8\"><option value=\"d\" selected>Select one<\/option><option value=\"w\">no output<\/option><option value=\"w\">two lines: 'User logged on.' and 'Enter a command:'<\/option><option value=\"r\">one line: 'User logged on.'<\/option><option value=\"w\">three lines: 'User logged on.', 'Good evening!', and 'Enter a command:'<\/option><\/select><div class='pyboxbuttons'><input type=\"hidden\" name=\"lang\" value=\"\"\/><input type=\"hidden\" name=\"slug\" value=\"6.nested\"\/><input type='submit' style='margin:5px;' value='Check answer' onClick='pbMultiCheck(8)'\/><\/div><div class=\"pbresults\" id=\"pyMultiResults8\"><\/div><div class=\"epilogue\">\u6b63\u786e! \u5982\u679c\u7531\u4fe1\u606f\u5c55\u793a\u51fa\u6765\uff0c\u4e00\u5b9a\u662f\u5916\u56f4\u7684\uff08\u84dd\u8272\u7684\uff09block\u88ab\u8fd0\u884c\uff0c\u6362\u53e5\u8bdd\u8bf4\uff0c\u5bc6\u7801\u6b63\u786e\u3002\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u5c3d\u7ba1<code>hour&gt;17<\/code>\u662f\u9519\u7684(\u5185\u90e8\u7684block\u88ab\u8df3\u8fc7\u4e86)\uff0c\u5916\u56f4\u7684block\u4e2d<code>print('Enter a command:')<\/code>\u4e00\u884c\u4ecd\u4f1a\u88ab\u8fd0\u884c\u3002<\/div><\/div>\n<p>\u73b0\u5728\uff0c\u4f60\u9700\u8981\u7528\u5d4c\u5957\u7684blocks\u6765\u5199\u4e00\u4e2a\u6bd4\u8f83\u590d\u6742\u7684\u8ba1\u7b97\u5e74\u9f84\u7684\u7a0b\u5e8f\u3002<\/p>\n<p><form class=\"pbform\" action=\"#\" id=\"pbform9\" method=\"POST\">\n<div class='pybox modeNeutral ' id='pybox9'>\n<img title='You have not yet completed this problem.' src='https:\/\/cscircles.cemc.uwaterloo.ca\/dev\/wp-content\/plugins\/pybox\/files\/icon.png' class='pycheck'\/><div class=\"heading\"><span class='type'>Coding Exercise: <\/span><span class='title'>Age checker<\/span><\/div>\u7f16\u5199\u7a0b\u5e8f\uff1a\u8f93\u5165\u4e00\u4e2a\u6574\u6570\uff08\u4ee3\u8868\u67d0\u4e2a\u4eba\u7684\u5e74\u9f84\uff09\u3002\u5982\u679c\u8be5\u503c\u5927\u4e8e\u7b49\u4e8e18\uff0c\u5219\u6253\u5370<code>You can vote<\/code>\u3002\u5982\u679c\u5e74\u9f84\u57280\u523017\u5c81\u4e4b\u95f4\uff0c\u5219\u6253\u5370 <code>Too young to vote<\/code>\u3002\u5982\u679c\u5e74\u9f84\u5c0f\u4e8e0\uff0c\u5219\u6253\u5370<code>You are a time traveller<\/code>.<div class=\"helpOuter\" style=\"display: none;\"><div class=\"helpInner\"><div style=\"text-align: center\">You need to create an account and log in to ask a question.<\/div><\/div><\/div><div class='pyboxTextwrap pyboxCodewrap RW resizy'  style='height: 526px;'><textarea wrap='off' name='usercode9' id='usercode9'  cols=10 rows=20   class='pyboxCode RW'>\nage = int(input())\n<\/textarea><\/div>\n<div id='pbhistory9' class='flexcontain' style='display:none;'><\/div>\n<input type='hidden' id='defaultCode9' value='age = int(input())\\n'><\/input>\n<div class='pyboxbuttons'><table><tr>\n<td><input type='submit' name='submit' id='submit9' value=' '\/><\/td>\n<td><input type='button' name='consolecopy' value=\"Open in console\" onclick=\"pbConsoleCopy(9)\" ><\/td>\n<td><input type='button' name='visualize' value=\"Visualize\" onclick=\"pbVisualize(9,'N')\" ><\/td>\n<td><input type='button' name='history' value=\"History\" onclick=\"historyClick(9,'6.agecheck')\" ><\/td>\n<\/tr><\/table><select id='pbSelect9' class='selectmore'><option name='more'>More actions...<\/option>\n<option name='default' data-pbonclick=\"pbSetText(9,descape($('#defaultCode9').val()))\" >Reset code to default<\/option>\n<option name='help' data-pbonclick=\"helpClick(9);\" >Help<\/option>\n<\/select><\/div>\n<input type=\"hidden\" name=\"lang\" value=\"\"\/><input type=\"hidden\" id=\"inputInUse9\" name=\"inputInUse\" value=\"Y\"\/>\n<input type=\"hidden\" name=\"pyId\" value=\"9\"\/>\n<input type=\"hidden\" name=\"hash\" value=\"53fa6bc92ef2a22d024faeb63e08fab8\"\/>\n<div id='pbresults9' class='pbresults avoidline'><\/div>\n<\/div>\n<\/form>\n<script type='text\/javascript'>jQuery(function(){pbToggleCodeMirror(9);});document.getElementById(\"submit9\").value = \"Run program\";document.getElementById(\"inputInUse9\").value = \"N\";<\/script>\n<\/p>\n<p>\u5728\u4e4b\u540e\u7684\u7b2c9\u8bfe\u91cc\uff0c\u901a\u8fc7\u4f7f\u7528tt&gt;else<\/p>\n<p><code><\/code>\u548c<code>elif<\/code>(\u6216\u8005\u5982\u679c)\u6307\u4ee4\uff0c\u548cBoolean\u8fd0\u7b97\u7b26\"and\", \"or\"\u548c\"not\"\uff0c\u6211\u4eec\u4f1a\u770b\u5230\u8bbe\u8ba1\u591a\u4e2aboolean\u8bed\u53e5\u7684\u7a0b\u5e8f\u53ef\u4ee5\u88ab\u7b80\u5316\u7684\u60c5\u51b5\u3002\u73b0\u5728\u4f60\u53ef\u4ee5\u8fdb\u884c\u4e0b\u4e00\u8bfe\u7684\u5b66\u4e60\u4e86\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u76f4\u5230\u73b0\u5728\uff0c\u6211\u4eec\u6240\u5b66\u7684\u6240\u6709\u7a0b\u5e8f\u90fd\u662f\u4e00\u884c\u4e00\u884c\u5730\u6267\u884c\u4ee3\u7801\u3002\u4e2d\u95f4\u4e0d\u8df3\u8fc7\u4efb\u4f55\u4e00\u884c\u3002\u4e0b\u9762\u662f\u4e00\u4e2a\u4f8b\u5b50\uff1a\u901a\u8fc7\u952e\u76d8\u65b9\u5411\u952e\u6216\u6eda\u52a8\u8f74\u6765\u67e5\u770b\u6bcf\u884c\u4ee3\u7801\u3002 \u8fd9\u8282\u8bfe\u6211\u4eec\u8981\u5b66\u4e00\u4e2a\u65b0\u5185\u5bb9\uff0c\u6761\u4ef6\u4ece\u53e5\u3002\u6761\u4ef6\u4ece\u53e5\u6307\u5728\u4e00\u5b9a\u6761\u4ef6\u88ab\u6ee1\u8db3\u7684\u60c5\u51b5\u4e0b\uff0c\u67d0\u4e9b\u7a0b\u5e8f\u8fd0\u884c\uff0c\u800c\u5728\u4e0d\u88ab\u6ee1\u8db3\u7684\u60c5\u51b5\u4e0b\uff0c\u67d0\u4e9b\u7a0b\u5e8f\u4e0d\u8fd0\u884c\u3002\u6bd4\u5982\u8bf4\uff0c\u6211\u4eec\u5c06\u4ee5\u4e0b\u7a0b\u5e8f\u505a\u66f4\u6539\uff1a\u5f53\u4e00\u4e2a\u4eba\u7684\u5e74\u9f84\u8db3\u591f\u5927\u65f6\uff0c\u8f93\u51fa\u4e00\u4e2a\u989d\u5916\u7684\u4fe1\u606f\u3002\u90a3\u4e48\u6211\u4eec\u9700\u8981\u52a0\u4e24\u884c\uff1aif age &gt; 65:\u00a0(\u610f\u601d\u662f\"\u5982\u679c\u5e74\u9f84\u5927\u4e8e65\u5c81\") \u548c\u00a0 print('Enjoy retirement!')\u3002\u73b0\u5728\u6211\u4eec\u6765\u518d\u6b21\u6309\u884c\u8fd0\u884c\u4e00\u4e0b\u7a0b\u5e8f\uff1a \u8fd9\u91cc\u8981\u6ce8\u610f\uff0cprint\u8bed\u53e5\u88ab\u8df3\u8fc7\u4e86\u56e0\u4e3aage\u53ea\u670931\uff01 \u90a3\u4e48\u628a\u51fa\u751f\u5e74\u4efd\u6539\u4e3a1928\uff0c\u540c\u6837\u7684\u7a0b\u5e8f\u518d\u6b21\u8fd0\u884c \u53c8\u4f1a\u662f\u4ec0\u4e48\u7ed3\u679c\u5462\uff1f \u6ce8\u610f\u5230\u533a\u522b\u4e86\u4e48\uff1f\u540e\u4e00\u4e2a\u7a0b\u5e8f(age\u662f85\u7684)\u6253\u5370\u51fa\u4e86\u4e24\u884c\uff0c\u6ca1\u6709\u8df3\u8fc7\u4efb\u4f55\u4e00\u884c\u3002\u8fd9\u5c31\u662fif statement\u7684\u76ee\u7684\uff1a\u5148\u68c0\u67e5\u4e00\u4e9b\u6761\u4ef6(age\u5927\u4e8e65\u4e48\uff1f)\uff0c\u53ea\u6709\u5f53\u8fd9\u4e9b\u6761\u4ef6\u6210\u7acb\u65f6\u518d\u8fd0\u884c\u67d0\u4e9b\u7a0b\u5e8f (\u6253\u5370Enjoy retirement!)\u3002 \u6211\u4eec\u628a\u88ab\u68c0\u67e5\u7684\u6761\u4ef6\u53eb\u505acondition\uff0c\u628a\u5982\u679c\u6761\u4ef6\u6210\u7acb\u5219\u8fd0\u884c\u7684\u7a0b\u5e8f\u53eb\u505abody\u3002Body\u9700\u8981\u88ab\u7f29\u8fdb\uff0c\u4e5f\u5c31\u662f\u8bf4\uff0c\u5728\u8fd9\u4e00\u884c\u7684\u5f00\u5934\u9700\u8981\u6709\u4e00\u4e9b\u989d\u5916\u7684\u7a7a\u683c(\u53c2\u8003\u4ee5\u4e0a\u4ee3\u7801)\u3002Body\u53ef\u4ee5\u5305\u542b\u4e0d\u6b62\u4e00\u4e2a\u8bed\u53e5\uff1a\u591a\u5199\u51e0\u884c\u7f29\u8fdb\u7684\u7a0b\u5e8f\u5373\u53ef\u8fbe\u5230\u6b64\u76ee\u7684\u3002\u4e0b\u9762\u662f\u4e00\u4e2a\u4f8b\u5b50\u3002 \u5728\u63a7\u5236\u53f0\u6216\u89c2\u5bdf\u4eea\u4e2d\u8fd0\u884c\u6b64\u7a0b\u5e8f\uff0c\u5176\u4e2d\u51fa\u751f\u5e74\u4efd\u4e3a1982\u5e74\u3002\u4e24\u4e2a\u7f29\u8fdb\u7684\u884c\u90fd\u88ab\u8df3\u8fc7\u4e86\u3002 \u5728\u4e0b\u4e00\u4e2a\u7ec3\u4e60\u4e2d\uff0c\u4f60\u9700\u8981\u5199\u4e00\u4e2a\u6709\u5173\u5e03\u5c14\u6bd4\u8f83\u7684\u7a0b\u5e8f\u3002\u5728\u4e0a\u9762\u7684\u90a3\u4e2a\u4f8b\u5b50\u4e2d\u6211\u4eec\u5df2\u7ecf\u770b\u5230\u4e86\"if x &gt; y:\"\u610f\u5473\u7740\"\u5982\u679cx\u5927\u4e8ey\"\u3002\u4e0b\u9762\u7684\u7a0b\u5e8f\u53ef\u80fd\u4f1a\u6709\u5e2e\u52a9\uff1a if x &lt; y:\u8868\u793a\"\u5982\u679cx\u5c0f\u4e8ey\" if x &gt;= y:\u8868\u793a\"\u5982\u679cx\u5927\u4e8e\u7b49\u4e8ey\" if x &lt;= y:\u8868\u793a\"\u5982\u679cx\u5c0f\u4e8e\u7b49\u4e8ey\" Coding Exercise: IHOPython\u5199\u4e00\u4e2a\u7a0b\u5e8f\uff1a\u901a\u8fc7pancakes = int(input())\u8f93\u5165\u4e00\u4e2a\u6574\u6570\u3002\u5982\u679cpancakes\u5927\u4e8e3\uff0c\u6253\u5370Yum!\uff1b\u5982\u679cpancakes\u5c0f\u4e8e\u7b49\u4e8e3\uff0c\u6253\u5370Still hungry!\u3002\u63d0\u793aYou need &hellip; <a href=\"https:\/\/cscircles.cemc.uwaterloo.ca\/dev\/zh-6\/\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-9231","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/cscircles.cemc.uwaterloo.ca\/dev\/wp-json\/wp\/v2\/pages\/9231","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cscircles.cemc.uwaterloo.ca\/dev\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/cscircles.cemc.uwaterloo.ca\/dev\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/cscircles.cemc.uwaterloo.ca\/dev\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/cscircles.cemc.uwaterloo.ca\/dev\/wp-json\/wp\/v2\/comments?post=9231"}],"version-history":[{"count":12,"href":"https:\/\/cscircles.cemc.uwaterloo.ca\/dev\/wp-json\/wp\/v2\/pages\/9231\/revisions"}],"predecessor-version":[{"id":10212,"href":"https:\/\/cscircles.cemc.uwaterloo.ca\/dev\/wp-json\/wp\/v2\/pages\/9231\/revisions\/10212"}],"wp:attachment":[{"href":"https:\/\/cscircles.cemc.uwaterloo.ca\/dev\/wp-json\/wp\/v2\/media?parent=9231"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}