public static void Main()
Console.WriteLine("the age is " + age);
Console.WriteLine(" id :" + id);
double n1,n2,n3,n4,n5,average;
average=(n1+n2+n3+n4+n5)/5;
Console.WriteLine("the average of n1,n2,n3,n4,n5 is " + average);
double radius ,radius2,area;
Console.WriteLine("The area of circle for radius " + radius +" is " + area);
Console.WriteLine("The Bmi of " + name + " that has weight " + weight + " and " + height + " is " + bmi);