Adding months to a date

using System;
 
namespace forgetCode
{
class Program
{
static void Main(string[] args)
{
 
Console.WriteLine("Enter year in the format dd-mm-yyyy");
DateTime dt = Convert.ToDateTime(Console.ReadLine());
 
Console.WriteLine("Enter the months to add :");
int months = Convert.ToInt32(Console.ReadLine());
 
DateTime newDate = dt.AddMonths(months);
Console.WriteLine(newDate.ToShortDateString());


}
 
}
} 

Output:
Enter year in the format dd-mm-yyyy
02-03-2012
Enter the months to add :
4
02-07-2012
 
 
Enter year in the format dd-mm-yyyy
20-11-2012
Enter the months to add :
2
20-01-2013