Help me in solving FLOW013 problem

My issue

My codes are runs but when I submit than they wrong and for my confirmation I check other’s solution so there solution are also exact same to my code

My code

#include <iostream>
using namespace std;

int main() {
    int t;
    while (t--)
        int x,y,z;
        if(x+y+z == 180)
	// your code goes here
	return 0;

Problem Link: FLOW013 Problem - CodeChef

Print yes and no in uppercase.

output is case sensitive

Print yes and no in uppercase and try to use a do while

output is case sensitive

Write “yes” and “no” in uppercase

Outputs should be in Upper Case.