using System;
class MainClass {
public static void Main() {
int x;
x = 10;
Console.WriteLine("Here is x: " + x);
// x is automatically boxed when passed to sqr()
x = sqr(x);
Console.WriteLine("Here is x squared: " + x);
}
static int sqr(object o) {
return (int)o * (int)o;
}
}
Here is x: 10
Here is x squared: 100