/* File : example.c */ #include /* we are using the qsort function, which needs a helper function to sort */ int compare_int(const void * a, const void * b) { return ( *(int*)a - *(int*)b ); } void sort_int(int* arr, int len) { qsort(arr, len, sizeof(int), compare_int); } // ditto doubles int compare_double(const void * a, const void * b) { return (int)( *(double*)a - *(double*)b ); } void sort_double(double* arr, int len) { qsort(arr, len, sizeof(double), compare_double); }