c语言程序设计！求高手解决！成功后加分！！！！！！

#include<stdio.h>
int main()
{
int x,y , z;
for (z = 0; z <= 100; z += 3)
for (y = 0; y + z <= 100; y++)
{
x = 100 - y - z;
if (x * 5 + y * 3 + z/ 3 == 100)
{
if (x