text: #include "NhapXuat.h"
  
  void NhapMang(int arr[], int n)
  {
  	for (int i = 0; i < n; i++)
  	{
  		printf("Nhap arr[%d] = ", i);
  		scanf("%d", &arr[i]);
  	}
  }
  
  void XuatMang(int arr[], int n)
  {
  	for (int i = 0; i < n; i++)
  		printf("%d   ", arr[i]);
  	printf("\n");
  }
  
  void NhapMangNgauNhien(int arr[], int n)
  {
  	srand(time(0));
  	for (int i = 0; i < n; i++)
  		arr[i] = 10 + rand() % (99 - 10 + 1);
  }