Driver code
int main ( ) { int h = 0 , k = 0 , x = 2 , y = 1 , a = 4 ; if ( checkpoint ( h , k , x , y , a ) > 0 ) cout << " Outside " << endl ; else if ( checkpoint ( h , k , x , y , a ) == 0 ) cout << " On ▁ the ▁ parabola " << endl ; else cout << " Inside " << endl ; return 0 ; }