using
System;using
System.Collections.Generic;using
System.Text;namespace
ConsoleApplication1{
class Class1{
public double r; public Class1(int a){
r = a;
}
public double area(){
return r * r * 3.14;}
}
/********************************************************************************************/ class Program{
static void Main(string[] args){
Class1 d = new Class1(1); Console.WriteLine("{0}\n{1}",d.area(),Program.p(d)); Console.ReadLine();}
static double p(Class1 c){
return (c.r) * 2 * 3.14;}
}
}
