Program in C to check whether triangle is valid or not (user inputs angles of triangle)

Following is the program to check whether  triangle is valid or not :-





#include<stdio.h>

int main()
{

int a,b,c,sum;

clrscr();

printf("enter three angles of triangle\n");

scanf("%d%d%d",&a,&b,&c);

sum=a+b+c;

if(sum==180)
{
printf("triangle is valid");
}
else
{
printf("triangle is not valid");
}
return 0;

}
Output:-

Note- using the same logic we can design this program in C++ too