C库函数 - qsort()

#include <stdio.h>

#include <stdlib.h>



int values[] = { 88, 56, 100, 2, 25 };



int cmpfunc (const void * a, const void * b) {

   return ( *(int*)a - *(int*)b );

}



int main () {

   int n;



   printf("Before sorting the list is: \n");

   for( n = 0 ; n < 5; n++ ) {

      printf("%d ", values[n]);

   }



   qsort(values, 5, sizeof(int), cmpfunc);



   printf("\nAfter sorting the list is: \n");

   for( n = 0 ; n < 5; n++ ) {   

      printf("%d ", values[n]);

   }



   return(0);

}