اكتب برنامج بلغة سي شارب c# يظهر عدد الايام الموافق لكل شهر

using System;
class HelloWorld {
  static void Main() {
    int m; String Sm;     
    int mDays = 0; 
 
    // Read m 
    Console.Write(" Input m : "); 
    Sm = Console.ReadLine();  m = Int32.Parse(Sm); 
 
    // give the number of days  (mDays) per month  (m)     
    switch (m) 
    {         
        case 1:         
        case 3:         
        case 5:         
        case 7:         
        case 8:         
        case 10:         
        case 12:             
        mDays = 31;             
        break;         
        case 4:         
        case 6:         
        case 9:         
        case 11:             
        mDays = 30;            
        break;         
        case 2: 
            mDays = 28;     
        break; 
    } 
 
    Console.WriteLine(" Month  " + m + " has " + mDays + " days"); 
  }
}