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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_953</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_952.html">< previous page</a></td> <td align="center" width="40%" style="background: #EEF3E2"><strong style="color: #2F4F4F; font-size: 120%;">page_953</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_954.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 953</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="Times New Roman, Times, Serif" size="3">to insert the </font><font face="Courier New, Courier, Mono New, Courier, Mono" size="3">TimeCard</font><font face="Times New Roman, Times, Serif" size="3"> class declaration into the program, and we use<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="Courier New, Courier, Mono New, Courier, Mono" size="2">#include聽tclist.h</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">to insert the </font><font face="Courier New, Courier, Mono New, Courier, Mono" size="3">TimeCardList</font><font face="Times New Roman, Times, Serif" size="3"> class declaration. (Recall that </font><font face="Courier New, Courier, Mono New, Courier, Mono" size="3">tclist.h</font><font face="Times New Roman, Times, Serif" size="3"> also happens to </font><font face="Courier New, Courier, Mono New, Courier, Mono" size="3">#include</font><font face="Times New Roman, Times, Serif" size="3"> the header file </font><font face="Courier New, Courier, Mono New, Courier, Mono" size="3">timecard.h</font><font face="Times New Roman, Times, Serif" size="3">. Thus, </font><font face="Courier New, Courier, Mono New, Courier, Mono" size="3">timecard.h</font><font face="Times New Roman, Times, Serif" size="3"> gets inserted into our program twice. If we had not used the </font><font face="Courier New, Courier, Mono New, Courier, Mono" size="3">#ifndef</font><font face="Times New Roman, Times, Serif" size="3"> directive at the beginning of </font><font face="Courier New, Courier, Mono New, Courier, Mono" size="3">timecard.h</font><font face="Times New Roman, Times, Serif" size="3">, we would now get a compile-time error for declaring the </font><font face="Courier New, Courier, Mono New, Courier, Mono" size="3">TimeCard</font><font face="Times New Roman, Times, Serif" size="3"> class twice.)</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">To run the program, we link its object code file with the object code files </font><font face="Courier New, Courier, Mono New, Courier, Mono" size="3">tclist.obj</font><font face="Times New Roman, Times, Serif" size="3">, </font><font face="Courier New, Courier, Mono New, Courier, Mono" size="3">timecard.obj</font><font face="Times New Roman, Times, Serif" size="3">, and </font><font face="Courier New, Courier, Mono New, Courier, Mono" size="3">time.obj</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><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PunchIn聽program<br />//聽A聽data聽file聽contains聽time聽cards聽for聽employees聽who聽have聽punched<br />//聽in聽for聽work.聽聽This聽program聽reads聽in聽the聽time聽cards聽from聽the<br />//聽input聽file,聽then聽reads聽employee聽ID聽numbers聽from聽the聽standard<br />//聽input.聽聽For聽each聽ID聽number,聽the聽program聽looks聽up聽the聽employee's<br />//聽punch-in聽time聽and聽displays聽it聽to聽the聽user<br />//******************************************************************<br />#include聽bool.h<br />#include聽timecard.h聽聽聽//聽For聽TimeCard聽class<br />#include聽tclist.h聽聽聽聽聽//聽For聽TimeCardList聽class<br />#include聽<iostream.h><br />#include聽<fstream.h>聽聽聽聽//聽For聽file聽I/O<br /><br />void聽GetID(聽long&聽);<br />void聽OpenForInput(聽ifstream&聽);<br /><br />int聽main()<br />{<br />聽聽聽聽if聽stream聽聽聽聽punchInFile;聽聽聽聽聽聽//聽Input聽file聽of聽time聽cards<br />聽聽聽聽TimeCardList聽punchInList;聽聽聽聽聽聽//聽List聽of聽time聽cards<br />聽聽聽聽TimeCard聽聽聽聽聽punchInCard;聽聽聽聽聽聽//聽A聽single聽time聽card<br />聽聽聽聽long聽聽聽聽聽聽聽聽聽idNum;聽聽聽聽聽聽聽聽聽聽聽聽//聽Employee聽ID聽number<br />聽聽聽聽Boolean聽聽聽聽聽聽found;聽聽聽聽聽聽聽聽聽聽聽聽//聽True聽if聽idNum聽found聽in聽list<br /><br />聽聽聽聽OpenForInput(punchInFile);<br />聽聽聽聽if聽(聽!punchInFile聽)<br />聽聽聽聽聽聽聽聽return聽1;<br /><br />聽聽聽聽punchInList.ReadAll(punchInFile);<br />聽聽聽聽punchInList.SelSort();<br /></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_952.html">< previous page</a></td> <td align="center" width="40%" style="background: #EEF3E2"><strong style="color: #2F4F4F; font-size: 120%;">page_953</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_954.html">next page ></a></td> </tr> </table> </body> </html>⌨️ 快捷键说明
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