C++ Programming Code Examples C++ > Computer Graphics Code Examples program in C++ to enter two angles of a triangle and find the third angle. program in C++ to enter two angles of a triangle and find the third angle. #include<iostream> using namespace std; int main() { float ang1, ang2, ang3; cout << "\n\n Find the third angle of a triangle :\n"; cout << "-----------------------------------------\n"; cout<<" Input the 1st angle of the triangle : "; cin>>ang1; cout<<" Input the 2nd angle of the triangle : "; cin>>ang2; ang3=180-(ang1+ang2); cout << " The 3rd of the triangle is : " << ang3 << endl; cout << endl; return 0; }