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Programming and Problem Solving with C++

  <td><font face="Courier New, Courier, Mono New, Courier, Mono" size="3">srand(seed)</font></td>
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  <td><font face="Times New Roman, Times, Serif" size="3"><i>Parameter:<br />
Effect:<br />
Function return value:<br />
Note:</i></font></td>
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  <td><font face="Times New Roman, Times, Serif" size="3">An </font><font face="Courier New, Courier, Mono New, Courier, Mono" size="3">int</font><font face="Times New Roman, Times, Serif" size="3"> expression </font><font face="Courier New, Courier, Mono New, Courier, Mono" size="3">seed</font><font face="Times New Roman, Times, Serif" size="3">, where </font><font face="Courier New, Courier, Mono New, Courier, Mono" size="3">seed</font><font face="Times New Roman, Times, Serif" size="3"> <u>&gt;</u> 0</font></td>
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  <td><font face="Times New Roman, Times, Serif" size="3">Using </font><font face="Courier New, Courier, Mono New, Courier, Mono" size="3">seed</font><font face="Times New Roman, Times, Serif" size="3">, the random number generator is initialized in preparation for subsequent calls to the </font><font face="Courier New, Courier, Mono New, Courier, Mono" size="3">rand</font><font face="Times New Roman, Times, Serif" size="3"> function.</font></td>
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  <td><font face="Times New Roman, Times, Serif" size="3">None (a void function)</font></td>
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  <td><font face="Times New Roman, Times, Serif" size="3">If </font><font face="Courier New, Courier, Mono New, Courier, Mono" size="3">srand</font><font face="Times New Roman, Times, Serif" size="3"> is not called before the first call to </font><font face="Courier New, Courier, Mono New, Courier, Mono" size="3">rand</font><font face="Times New Roman, Times, Serif" size="3">, a </font><font face="Courier New, Courier, Mono New, Courier, Mono" size="3">seed</font><font face="Times New Roman, Times, Serif" size="3"> value of 1 is assumed.</font></td>
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  <td><font face="Courier New, Courier, Mono New, Courier, Mono" size="3">system(str)</font></td>
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  <td><font face="Times New Roman, Times, Serif" size="3"><i>Parameter:<br />
Effect:<br />
Function return value:<br />
Note:</i></font></td>
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  <td><font face="Times New Roman, Times, Serif" size="3">A string (null-terminated </font><font face="Courier New, Courier, Mono New, Courier, Mono" size="3">char</font><font face="Times New Roman, Times, Serif" size="3"> array) </font><font face="Courier New, Courier, Mono New, Courier, Mono" size="3">str</font><font face="Times New Roman, Times, Serif" size="3"> representing an operating system command, exactly as it would be typed by a user on the operating system command line<br />
The operating system command represented by </font><font face="Courier New, Courier, Mono New, Courier, Mono" size="3">str</font><font face="Times New Roman, Times, Serif" size="3"> is executed.</font></td>
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  <td><font face="Times New Roman, Times, Serif" size="3">An </font><font face="Courier New, Courier, Mono New, Courier, Mono" size="3">int</font><font face="Times New Roman, Times, Serif" size="3"> value that is system-dependent</font></td>
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  <td><font face="Times New Roman, Times, Serif" size="3">Programmers often ignore the function return value, using the syntax of a void function call rather than a value-returning function call.</font></td>
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  <td><font face="Times New Roman, Times, Serif" size="3"><i>The Header File </i></font><i><font face="Courier New, Courier, Mono New, Courier, Mono" size="3">string.h</font></i></td>
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  <td><font face="Courier New, Courier, Mono New, Courier, Mono" size="3">strcat(toStr,聽fromStr)</font></td>
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  <td><font face="Times New Roman, Times, Serif" size="3"><i>Parameters:</i></font></td>
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  <td><font face="Times New Roman, Times, Serif" size="3">Strings (null-terminated </font><font face="Courier New, Courier, Mono New, Courier, Mono" size="3">char</font><font face="Times New Roman, Times, Serif" size="3"> arrays) </font><font face="Courier New, Courier, Mono New, Courier, Mono" size="3">toStr</font><font face="Times New Roman, Times, Serif" size="3"> and </font><font face="Courier New, Courier, Mono New, Courier, Mono" size="3">fromStr</font><font face="Times New Roman, Times, Serif" size="3">, where </font><font face="Courier New, Courier, Mono New, Courier, Mono" size="3">toStr</font><font face="Times New Roman, Times, Serif" size="3"> must be large enough to hold the result</font></td>
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聽




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