Question

Write a C# program that prompts a user to enter a birth month and day. Display an error message if the month is invalid (not 1 through 12) or the day is invalid for the month (for example, not between 1 and 31 for January or between 1 and 29 for February). If the month and day are valid, display them with a message.

Answer 1

Here is the code for you:

using System.IO;
using System;

class Program
{
static void Main()
{
int month, day;
//Prompts a user to enter a birth month and day.
Console.Write("Please enter your month of birth: ");
month = Convert.ToInt32(Console.ReadLine());
Console.Write("Please enter your day of birth: ");
day = Convert.ToInt32(Console.ReadLine());
//Display an error message if the month is invalid (not 1 through 12)
//or the day is invalid for the month
//If the month and day are valid, display them with a message.
if(month == 1 || month == 3 || month == 5 || month == 7 || month == 8 || month == 10 || month == 12)
if(day <= 31 && day >= 1)
Console.WriteLine("Your entry is valid.");
else
Console.WriteLine("Your entry is Invalid.");
else if(month == 4 || month == 6 || month == 9 || month == 11)
if(day <= 30 && day >= 1)
Console.WriteLine("Your entry is valid.");
else
Console.WriteLine("Your entry is Invalid.");
else if(month == 2)
if(day <= 29 && day >= 1)
Console.WriteLine("Your entry is valid.");
else
Console.WriteLine("Your entry is Invalid.");
else
Console.WriteLine("Your month is Invalid.");
  
}
}

And the ouput screenshot is:

《 Chrome File Edit View History Bookmarks People Window Help <> ) 98% E Q , Fri 3 Mar 06:03 ANANDA KUMAR THUMMAPUDI You <Chttps://www.tutorialspoint.com/compile csharp_online.php Apps Bookmarks Suggested Sites Web Slice Gallery Customize Links Imported From Safari codingground COMPILE AND EXECUTE C# SHARP ONLINE * Project ▼ File ▼ Edit ▼ ⑧ View ▼ Shut Down ? Help New Project-20170303 +Compile | Execute В root Share Code main.cs Tutorials» 16 17 18 19 20 21 //If the month and day are valid, display them with a message if(month == 1 11 month == 3 11 month == 5 11 monthー7 11 month main.cs 8 11 month == 10 11 month = if(day31 && day 1) Console.WriteLineC"Your entry is valid." else Console.WritelineC" Your entry is Invalid.; else if(month == 4 11 month == 6 11 month == 9 11 month 11) JAVA Programming 23 24 25 26 if(day30 && day 1) Console.WriteLineC"Your entry is valid." else Console.WritelineC" Your entry is Invalid.; Python Default Term Browser sh-4.3$ mono main.exe Please enter your month of birth: 15 Please enter your day of birth: 12 Your month is Invalid. sh-4.3S Imono main.exe Please enter your month of birth: 2 Please enter your day of birth: 30 Your entry is Invalid. sh-4.3$ mono main.exe Please enter your month of birth: 3 Please enter your day of birth: 30 Your entry is valid. sh-4.3$ w.pacb41.pdf Show AlIx