public static void Main()
Console.Write("Nhap so phan tu cua mang: ");
N = Convert.ToInt32(Console.ReadLine());
static void nhap_mang(int[] a, int N)
Console.Write("a[{0}] = ", i);
a[i] = Convert.ToInt32(Console.ReadLine());
static void xuat_mang(int[]a , int N )
Console.WriteLine(" Mang duoc nhap ");
Console.Write("{0}\t", a[i]);