static int cong(int a, int b)
public static void Main()
Console.WriteLine(" Nhap so a: ");
int a = int.Parse(Console.ReadLine());
Console.WriteLine(" Nhap so b: ");
int b = int.Parse(Console.ReadLine());
Console.WriteLine(" Ket qua la: " + cong(a,b).ToString());
Console.WriteLine(" A lon hon 100 ");
Console.WriteLine(" A khong lon hon 100 ");