Input
Enter first angle: 60
Enter second angle: 80
Output
Third angle = 40
#include <stdio.h>
int main()
{
int a, b, c;
printf("Enter two angles of triangle: ");
scanf("%d%d", &a, &b);
c = 180 - (a + b);
printf("Third angle is = %d", c);
return 0;
}