public class Main {
public static void main(String[] args) {
double pi = 3.14159;
float f = 2.2F;
System.out.println("pi = " + pi);
System.out.println("f = " + f);
int n = 15, d = 4;
f = n / d;
System.out.println("15/4 = " + f);
int radius = 10;
double area = pi * radius * radius;
System.out.println("area = " + area);
}
}