text: Find if a point lies inside a Circle | C # program to check if a point lies inside a circle or not ; Compare radius of circle with distance of its center from given point ; Driver Program to test above function
code: using System ; class GFG { static bool isInside ( int circle_x , int circle_y , int rad , int x , int y ) { if ( ( x - circle_x ) * ( x - circle_x ) + ( y - circle_y ) * ( y - circle_y ) <= rad * rad ) return true ; else return false ; } public static void Main ( ) { int x = 1 , y = 1 ; int circle_x = 0 , circle_y = 1 , rad = 2 ; if ( isInside ( circle_x , circle_y , rad , x , y ) ) Console . Write ( " Inside " ) ; else Console . Write ( " Outside " ) ; } }