max.cpp

#include <cstdio>
#include <cstdlib>

int compare (const void * a, const void * b) {
  return ( *(int*)b - *(int*)a );
}

void max(int *buff, int length, int * p1, int *p2) {
	qsort(buff, length, sizeof(int), compare);
	*p1 = buff[0];
	*p2 = buff[1];
}

int main(int argc, char **argv) {
	printf ("hello, world.");
	int s[4] = {0, 1, 2, 3};
	int max1, max2;
	
	max(s, 4, &max1, &max2);

	printf("%d %d\n", max1, max2);	
	exit(0);
}