// Months: print name of month and number of days. 
#include <iostream>
#include<string>
using namespace std;
int main()
{ //Array is 13: 0..12, so Jan is [1] and Dec. is [12], we don't use [0]
  int days[13]={0,31,28,31,30,31,30,31,31,30,31,30,31};
  string month[13]={"","January", "February","March", "April", "May",
	  "June","July","August","September", "October","November", "December"};
  int mth;
  cout<<"Enter the number of a month:";
  cin>>mth;
  if (mth<1 || mth>12)
    cout<<mth<<" is not a valid month.\n";
  else
    cout<<month[mth]<<" has "<<days[mth]<<" days.\n";
  return 0;
} //main