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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_624</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_623.html">< previous page</a></td> <td align="center" width="40%" style="background: #EEF3E2"><strong style="color: #2F4F4F; font-size: 120%;">page_624</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_625.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 624</font></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">聽聽聽聽聽聽聽聽聽聽聽聽//聽Invariant聽(prior聽to聽test):<br />聽聽聽聽聽聽聽聽聽聽聽聽//聽聽聽聽聽For聽all聽previous聽values聽of聽inputChar,<br />聽聽聽聽聽聽聽聽聽聽聽聽//聽聽聽聽聽freqList聽contains聽the聽counts聽of聽characters<br />聽聽聽聽聽聽聽聽聽聽聽聽//聽聽聽聽聽that聽were聽found聽in聽charList<br /><br />聽聽聽聽聽聽聽聽ScanList(charList,聽length,聽inputChar,聽index,聽found);<br />聽聽聽聽聽聽聽聽if聽(found)<br />聽聽聽聽聽聽聽聽聽聽聽聽freqList[index]++;<br />聽聽聽聽聽聽聽聽dataFile.get(inputChar);聽聽聽聽聽聽聽聽聽聽//聽Don't聽skip聽whitespace<br />聽聽聽聽}<br /><br />聽聽聽聽Print(freqList,聽charList,聽length);<br />聽聽聽聽return聽0;<br />}<br /><br />//******************************************************************<br /><br />void聽GetCharList(聽/*聽out聽*/聽char聽charList[],聽聽聽聽//聽List聽of聽chars<br />聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽/*聽out聽*/聽int&聽length聽聽聽聽聽)聽聽聽//聽Length聽of聽list<br /><br />//聽Reads聽the聽list聽of聽characters聽from聽standard聽input<br />//聽until聽SENTINEL_CHAR聽is聽encountered<br /><br />//聽Postcondition:<br />//聽聽聽聽聽User聽has聽been聽prompted聽to聽enter聽the聽list聽of聽characters<br />//聽聽&&聽length聽==聽number聽of聽characters聽in聽the聽list<br />//聽聽&&聽charList[0..length-1]聽contain聽the聽input聽characters<br />//聽Note:<br />//聽聽聽聽聽If聽the聽user聽enters聽more聽than聽MAX_LENGTH聽characters<br />//聽聽聽聽聽or聽types聽duplicate聽characters,聽the聽effect聽of聽this<br />//聽聽聽聽聽function聽is聽undefined<br />{<br />聽聽聽聽int聽counter;聽聽聽聽//聽Index聽variable<br />聽聽聽聽char聽ch;聽聽聽聽聽聽聽聽//聽Used聽for聽reading<br /><br />聽聽聽聽cout聽<<聽"Please聽enter聽your聽list聽of聽characters."聽<<聽endl<br />聽聽聽聽聽聽聽聽聽<<聽"Enter聽at聽most聽"聽<MAX_LENGTH聽<聽"聽characters,"聽<聽endl<br />聽聽聽聽聽聽聽聽聽<<聽"and聽terminate聽the聽list聽with聽a聽pound聽sign聽(#)."聽<聽endl;<br />聽聽聽聽counter聽=聽0;<br />聽聽聽聽cin.get(ch);<br />聽聽聽聽while聽(ch聽!=聽SENTINEL_CHAR)<br />{<br />聽聽聽聽聽聽聽聽聽聽聽聽//聽Invariant聽(prior聽to聽test):<br />聽聽聽聽聽聽聽聽聽聽聽聽//聽聽聽聽聽charList[0..counter-1]聽contain聽the<br />聽聽聽聽聽聽聽聽聽聽聽聽//聽聽聽聽聽聽聽first聽"counter"聽input聽values<br />聽聽聽聽聽聽聽聽聽聽聽聽//聽聽&&聽No聽previous聽value聽of聽ch聽was聽SENTINEL_CHAR</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_623.html">< previous page</a></td> <td align="center" width="40%" style="background: #EEF3E2"><strong style="color: #2F4F4F; font-size: 120%;">page_624</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_625.html">next page ></a></td> </tr> </table> </body> </html>⌨️ 快捷键说明
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