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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_722</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_721.html">< previous page</a></td> <td align="center" width="40%" style="background: #EEF3E2"><strong style="color: #2F4F4F; font-size: 120%;">page_722</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_723.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 722</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">const聽int聽NUM_ROWS聽=聽10;<br />const聽int聽NUM_COLS聽=聽20;<br />typedef聽int聽TableType[NUM_ROWS][NUM_COLS];</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">and then write the following general-purpose function that initializes all elements of an array to a specified value:</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">void聽Initialize(聽/*聽out聽*/聽TableType聽table,聽聽聽//聽Array聽to聽initialize<br />聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽/*聽in聽*/聽聽int聽聽聽聽聽聽聽initVal)聽//聽Initial聽value<br /><br />//聽Initializes聽each聽element聽of聽table聽to聽initVal<br /><br />//聽Precondition:<br />//聽聽聽聽聽initVal聽is聽assigned<br />//聽Postcondition:<br />//聽聽聽聽聽table[0..NUM_ROWS-1][0..NUM_COLS-1]聽==聽initVal<br /><br />{<br />聽聽聽聽int聽row;<br />聽聽聽聽int聽col;<br /><br />聽聽聽聽for聽(row聽=聽0;聽row聽<聽NUM_ROWS;聽row++)<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table[0..row-1][0..NUM_COLS-1]聽==聽initVal<br />聽聽聽聽聽聽聽聽聽聽聽聽//聽&&聽0聽<=聽row聽<=聽NUM_ROWS<br /><br />聽聽聽聽聽聽聽聽for聽(col聽=聽0;聽col聽<聽NUM_COLS;聽col++)<br /><br />聽聽聽聽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//聽聽聽聽聽table[row][0..col-1]聽==聽initVal<br />聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽//聽&&聽0聽<=聽col聽<=聽NUM_COLS<br /><br />聽聽聽聽聽聽聽聽聽聽聽聽table[row][col]聽=聽initVal;<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">The calling code could then declare and initialize one or more arrays of type </font><font face="Courier New, Courier, Mono New, Courier, Mono" size="3">TableType</font><font face="Times New Roman, Times, Serif" size="3"> by making calls to the </font><font face="Courier New, Courier, Mono New, Courier, Mono" size="3">Initialize</font><font face="Times New Roman, Times, Serif" size="3"> function. For example,</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">TableType聽delta;<br />TableType聽gamma;<br /><br />Initialize(delta,聽0);<br />Initialize(gamma,聽-1);<br />聽聽.<br />聽聽.<br />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_721.html">< previous page</a></td> <td align="center" width="40%" style="background: #EEF3E2"><strong style="color: #2F4F4F; font-size: 120%;">page_722</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_723.html">next page ></a></td> </tr> </table> </body> </html>⌨️ 快捷键说明
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