driver code
public static void main ( String arr [ ] ) { int h = 0 , k = 0 , x = 2 , y = 1 , a = 4 ; if ( checkpoint ( h , k , x , y , a ) > 0 ) System . out . println ( " Outside " ) ; else if ( checkpoint ( h , k , x , y , a ) == 0 ) System . out . println ( " On ▁ the ▁ parabola " ) ; else System . out . println ( " Inside " ) ; } }