Code to print perimeter of circle

Question

import java.util.Scanner;

public class Main {

public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
double pi = 3.14;
//your code goes here
int radius = scanner.nextint();
int per= 2*pi*radius;
System.out.println(per);

}
}

Answer 1

Phantom

No you can't convert double to int like that, you will get error. So cast with int like this:

int per = (int) (2 * pi * radius);

Btw in this practice result would be as double so assign calculation to a double variable.

Answer 2

Is there a way to convert double into integer

Answer 3

Yes through typecasting

Answer 4

Phantom make the per variable double