// Input a valid month
#include <iostream>
using namespace std;
int main() { 
  int month;
  cout<<"Enter the number of a month:";
  cin>>month;
  if (month <1 || month >12)
     cout<<month<<" is NOT a valid month.\n";
  else
     cout<<month<<" is a valid month.\n";
  system("pause");
  return 0;
} // main