//Input angles of a triangle and check whether triangle is valid or not//
#include <stdio.h>

int main()
{
    int a1,a2,a3,sum;

    printf("Enter the angles of triangle:");
    scanf("%d %d %d",&a1,&a2,&a3);

    sum=a1+a2+a3;

    if(sum == 180 && a1 > 0 && a2 >0 && a3 > 0)
    {
        printf("Triangle is valid");
    }
    else
    {
        printf("Triangle is not valid");
    }

    return 0;
}