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<P>函数名: qsort
<BR>功&nbsp; 能: 使用快速排序例程进行排序
<BR>用&nbsp; 法: void qsort(void *base, int nelem, int width, int (*fcmp)());
<BR>程序例:

<P>#include &lt;stdio.h>
<BR>#include &lt;stdlib.h>
<BR>#include &lt;string.h>

<P>int sort_function( const void *a, const void *b);

<P>char list[5][4] = { "cat", "car", "cab", "cap", "can" };
<BR>&nbsp;

<P>int main(void)
<BR>{
<BR>&nbsp;&nbsp; int&nbsp; x;

<P>&nbsp;&nbsp; qsort((void *)list, 5, sizeof(list[0]), sort_function);
<BR>&nbsp;&nbsp; for (x = 0; x &lt; 5; x++)
<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; printf("%s\n", list[x]);
<BR>&nbsp;&nbsp; return 0;
<BR>}

<P>int sort_function( const void *a, const void *b)
<BR>{
<BR>&nbsp;&nbsp; return( strcmp(a,b) );
<BR>}
<BR>&nbsp;

<P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
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