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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_623</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_622.html">< previous page</a></td> <td align="center" width="40%" style="background: #EEF3E2"><strong style="color: #2F4F4F; font-size: 120%;">page_623</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_624.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 623</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">//******************************************************************<br />//聽CharCount聽program<br />//聽This聽program聽counts聽the聽frequency聽of聽occurrence聽of聽certain<br />//聽characters聽in聽a聽text聽file.聽聽The聽specific聽characters聽to聽be<br />//聽counted聽are聽read聽from聽the聽standard聽input聽device<br />//******************************************************************<br />#include聽<iostream.h><br />#include聽<iomanip.h>聽聽聽聽聽//聽For聽setw()<br />#include聽<fstream.h>聽聽聽聽聽//聽For聽file聽I/O<br />#include聽"bool.h"聽聽聽聽聽聽聽聽//聽For聽Boolean聽type<br /><br />const聽int聽聽MAX_LENGTH聽=聽256;聽聽聽聽聽聽聽//聽Max.聽number聽of聽different<br />聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽//聽聽聽characters<br />const聽char聽SENTINEL_CHAR聽=聽'#';聽聽聽聽//聽Marks聽the聽end聽of聽the聽character<br />聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽//聽聽聽list<br /><br />void聽GetCharList(聽char[],聽int&聽);<br />void聽Print(聽const聽int[],聽const聽char[],聽int聽);<br />void聽ScanList(聽const聽char[],聽int,聽char,聽int&,聽Boolean&聽);<br />void聽ZeroFreqList(聽int[],聽int聽);<br /><br />int聽main()<br />{<br />聽聽聽聽char聽聽聽聽聽charList[MAX_LENGTH];聽聽聽聽//聽Chars聽to聽be聽counted<br />聽聽聽聽int聽聽聽聽聽聽freqList[MAX_LENGTH];聽聽聽聽//聽Frequency聽counts<br />聽聽聽聽int聽聽聽聽聽聽length;聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽//聽Number聽of聽chars聽to聽count<br />聽聽聽聽int聽聽聽聽聽聽index;聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽//聽Position聽of聽a聽located聽char<br />聽聽聽聽char聽聽聽聽聽inputChar;聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽//聽Temporary聽char<br />聽聽聽聽Boolean聽聽found;聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽//聽True聽if聽char聽found聽in聽list<br />聽聽聽聽ifstream聽dataFile;聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽//聽Input聽file聽to聽be聽analyzed<br /><br />聽聽聽聽dataFile.open("text.dat");<br />聽聽聽聽if聽(聽!dataFile聽)<br />聽聽聽聽{<br />聽聽聽聽聽聽聽聽cout聽<<聽"**聽Can't聽open聽input聽file聽**"聽<<聽endl;<br />聽聽聽聽聽聽聽聽return聽1;<br />聽聽聽聽}<br /><br />聽聽聽聽GetCharList(charList,聽length);<br />聽聽聽聽ZeroFreqList(freqList,聽length);<br /><br />聽聽聽聽//聽Count聽occurrences聽of聽desired聽characters聽in聽text聽on聽dataFile<br /><br />聽聽聽聽dataFile.get(inputChar);聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽//聽Don't聽skip聽whitespace<br />聽聽聽聽while聽(dataFile)聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽//聽While聽not聽EOF...<br />聽聽聽聽{</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_622.html">< previous page</a></td> <td align="center" width="40%" style="background: #EEF3E2"><strong style="color: #2F4F4F; font-size: 120%;">page_623</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_624.html">next page ></a></td> </tr> </table> </body> </html>⌨️ 快捷键说明
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