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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_872</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_871.html">< previous page</a></td> <td align="center" width="40%" style="background: #EEF3E2"><strong style="color: #2F4F4F; font-size: 120%;">page_872</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_873.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 872</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">C++ class declaration requirement we now choose a data representation. The simplest representation for a date is three </font><font face="Courier New, Courier, Mono New, Courier, Mono" size="3">int</font><font face="Times New Roman, Times, Serif" size="3"> valuesone each for the month, day, and year. Here, then, is the specification file containing the </font><font face="Courier New, Courier, Mono New, Courier, Mono" size="3">DateType</font><font face="Times New Roman, Times, Serif" size="3"> class declaration (along with the declaration of the </font><font face="Courier New, Courier, Mono New, Courier, Mono" size="3">RelationType</font><font face="Times New Roman, Times, Serif" size="3"> enumeration type).</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SPECIFICATION聽FILE聽(datetype.h)<br />//聽This聽file聽gives聽the聽specification聽of聽a聽DateType聽abstract聽data<br />//聽type聽and聽provides聽an聽enumeration聽type聽for聽comparing聽dates<br />//******************************************************************<br /><br />enum聽RelationType聽{BEFORE,聽SAME,聽AFTER};<br /><br />class聽DateType<br />{<br />public:<br />聽聽聽聽void聽Set(聽/*聽in聽*/聽int聽newMonth,<br />聽聽聽聽聽聽聽聽聽聽聽聽聽聽/*聽in聽*/聽int聽newDay,<br />聽聽聽聽聽聽聽聽聽聽聽聽聽聽/*聽in聽*/聽int聽newYear聽);<br />聽聽聽聽聽聽聽聽//聽Precondition:<br />聽聽聽聽聽聽聽聽//聽聽聽聽聽1聽<=聽newMonth聽<=聽12<br />聽聽聽聽聽聽聽聽//聽聽&&聽1聽<=聽newDay聽<=聽maximum聽no.聽of聽days聽聽聽in聽month聽newMonth<br />聽聽聽聽聽聽聽聽//聽聽&&聽1582聽<聽newYear<br />聽聽聽聽聽聽聽聽//聽Postcondition:<br />聽聽聽聽聽聽聽聽//聽聽聽聽聽Date聽is聽set聽according聽to聽the聽incoming聽parameters<br /><br />聽聽聽聽int聽Month()聽const;<br />聽聽聽聽聽聽聽聽//聽Postcondition:<br />聽聽聽聽聽聽聽聽//聽聽聽聽聽Function聽value聽==聽this聽date's聽month<br /><br />聽聽聽聽int聽Day()聽const;<br />聽聽聽聽聽聽聽聽//聽Postcondition:<br />聽聽聽聽聽聽聽聽//聽聽聽聽聽Function聽value聽==聽this聽date's聽day<br /><br />聽聽聽聽int聽Year()聽const;<br />聽聽聽聽聽聽聽聽//聽Postcondition:<br />聽聽聽聽聽聽聽聽//聽聽聽聽聽Function聽value聽==聽this聽date's聽year<br /><br />聽聽聽聽void聽Print()聽const;<br />聽聽聽聽聽聽聽聽//聽Postcondition:<br />聽聽聽聽聽聽聽聽//聽聽聽聽聽Date聽has聽been聽output聽in聽the聽form<br />聽聽聽聽聽聽聽聽//聽聽聽聽聽聽聽聽month聽day,聽year<br />聽聽聽聽聽聽聽聽//聽聽聽聽聽where聽the聽name聽of聽the聽month聽is聽printed聽as聽a聽string</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_871.html">< previous page</a></td> <td align="center" width="40%" style="background: #EEF3E2"><strong style="color: #2F4F4F; font-size: 120%;">page_872</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_873.html">next page ></a></td> </tr> </table> </body> </html>⌨️ 快捷键说明
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