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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> <html> <head> <title>page_594</title> <link rel="stylesheet" href="reset.css" type="text/css" media="all"> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> </head> <body> <table summary="top nav" border="0" width="100%"> <tr> <td align="left" width="30%" style="background: #EEF3E2"><a style="color: blue; font-size: 120%; font-weight: bold; text-decoration: none; font-family: verdana;" href="page_593.html">< previous page</a></td> <td align="center" width="40%" style="background: #EEF3E2"><strong style="color: #2F4F4F; font-size: 120%;">page_594</strong></td> <td align="right" width="30%" style="background: #EEF3E2"><a style="color: blue; font-size: 120%; font-weight: bold; text-decoration: none; font-family: verdana;" href="page_595.html">next page ></a></td> </tr> <tr> <td align="left" colspan="3" style="background: #ffffff; padding: 20px;"> <table border="0" width="100%" cellpadding="0"><tr><td align="center"> <table border="0" cellpadding="2" cellspacing="0" width="100%"><tr><td align="left"></td> <td align="right"></td> </tr></table></td></tr><tr><td align="left"><p></p><table border="0" cellspacing="0" cellpadding="0" width="100%"><tr><td align="right"><font face="Times New Roman, Times, Serif" size="2" color="#FF0000">Page 594</font></td></tr></table><table border="0" cellspacing="0" cellpadding="0"><tr><td rowspan="5"></td> <td colspan="3" height="17"></td> <td rowspan="5"></td></tr><tr><td colspan="3"></td></tr><tr><td></td> <td><font face="Times New Roman, Times, Serif" size="3">One-Dimensional Arrays</font></td><td></td></tr><tr><td colspan="3"></td></tr><tr><td colspan="3" height="1"></td></tr></table><table border="0" cellspacing="0" cellpadding="0"><tr><td rowspan="5"></td> <td colspan="3" height="12"></td> <td rowspan="5"></td></tr><tr><td colspan="3"></td></tr><tr><td></td> <td><font face="Times New Roman, Times, Serif" size="3">If we wanted to read a list of 1000 values and print them in reverse order, we could write a program of this form:</font></td><td></td></tr><tr><td colspan="3"></td></tr><tr><td colspan="3" height="1"></td></tr></table><table border="0" cellspacing="0" cellpadding="0"><tr><td rowspan="5"></td> <td colspan="3" height="12"></td> <td rowspan="5"></td></tr><tr><td colspan="3"></td></tr><tr><td></td> <td><font face="Courier New, Courier, Mono New, Courier, Mono" size="2">//****************************<br />//聽ReverseList聽program<br />//****************************<br />#include聽<iostream.h><br /><br />int聽main()<br />{<br />聽聽聽聽int聽value0;<br />聽聽聽聽int聽value1;<br />聽聽聽聽int聽value2;<br />聽聽聽聽聽聽.<br />聽聽聽聽聽聽.<br />聽聽聽聽聽聽.<br />聽聽聽聽int聽value999;<br /><br />聽聽聽聽cin聽>>聽value0;<br />聽聽聽聽cin聽>>聽value1;<br />聽聽聽聽cin聽>>聽value2;<br />聽聽聽聽聽聽.<br />聽聽聽聽聽聽.<br />聽聽聽聽聽聽.<br />聽聽聽聽cin聽>>聽value999;<br /><br />聽聽聽聽cout聽<<聽value999聽<<聽endl;<br />聽聽聽聽cout聽<<聽value998聽<<聽endl;<br />聽聽聽聽cout聽<<聽value997聽<<聽endl;<br />聽聽聽聽聽聽.<br />聽聽聽聽聽聽.<br />聽聽聽聽聽聽.<br />聽聽聽聽cout聽<<聽value0聽<<聽endl;<br />聽聽聽聽return聽0;<br />}</font></td><td></td></tr><tr><td colspan="3"></td></tr><tr><td colspan="3" height="1"></td></tr></table><table border="0" cellspacing="0" cellpadding="0"><tr><td rowspan="5"></td> <td colspan="3" height="12"></td> <td rowspan="5"></td></tr><tr><td colspan="3"></td></tr><tr><td></td> <td><font face="Times New Roman, Times, Serif" size="3">This program is over 3000 lines long, and we have to use 1000 separate variables. Note that all the variables have the same name except for an appended number that distinguishes them. Wouldn't it be convenient if we could put the number into a counter variable and use For loops to go from 0 through 999, and then from 999 back down to 0? For example, if the counter variable were </font><font face="Courier New, Courier, Mono New, Courier, Mono" size="3">number</font><font face="Times New Roman, Times, Serif" size="3">, we could replace the 2000 original input/output statements with the following four lines of code (we enclose </font><font face="Courier New, Courier, Mono New, Courier, Mono" size="3">number</font><font face="Times New Roman, Times, Serif" size="3"> in brackets to set it apart from </font><font face="Courier New, Courier, Mono New, Courier, Mono" size="3">value</font><font face="Times New Roman, Times, Serif" size="3">):</font></td><td></td></tr><tr><td colspan="3"></td></tr><tr><td colspan="3" height="1"></td></tr></table></td></tr></table><p><font size="0"></font></p>聽 </td> </tr> <tr> <td align="left" width="30%" style="background: #EEF3E2"><a style="color: blue; font-size: 120%; font-weight: bold; text-decoration: none; font-family: verdana;" href="page_593.html">< previous page</a></td> <td align="center" width="40%" style="background: #EEF3E2"><strong style="color: #2F4F4F; font-size: 120%;">page_594</strong></td> <td align="right" width="30%" style="background: #EEF3E2"><a style="color: blue; font-size: 120%; font-weight: bold; text-decoration: none; font-family: verdana;" href="page_595.html">next page ></a></td> </tr> </table> </body> </html>⌨️ 快捷键说明
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