Program to Check Even Number and Odd Number

Here this post provides details about odd numbers and even numbers also provides program in C# to check even odd number.

Odd Numbers

Odd numbers are integers that cannot be evenly divided by 2. When you divide an odd number by 2, you get a remainder of 1.

Characteristics of Odd Numbers:

• They always end with 1, 3, 5, 7, or 9 in decimal notation.
• Examples include: -5, -3, -1, 1, 3, 5, 7, 9, 11, etc.

Properties:

• The sum of two odd numbers is always even.
• The sum of an odd number and an even number is always odd.
• The product of two odd numbers is always odd.

Program to check Odd Numbers:

Here's a simple C# program to check whether a given number is odd. This program prompts the user for input and displays the result accordingly.

 using System;  
 class OddChecker  
 {  
   static void Main()  
   {  
     Console.Write("Enter a number: ");  
     // Try to read and convert the input to an integer  
     try  
     {  
       int number = Convert.ToInt32(Console.ReadLine());  
       if(number%2==0)  
                     Console.WriteLine($"The provided number {number} is not Odd.");  
                else  
                     Console.WriteLine($"The provided number {number} is Odd.");  
     }  
     catch (FormatException)  
     {  
       Console.WriteLine("Please enter a valid integer.");  
     }  
   }  
 }  

Even Numbers

Even numbers are integers that can be evenly divided by 2, meaning there is no remainder when divided by 2.

Characteristics of Even Numbers:

• They always end with 0, 2, 4, 6, or 8 in decimal notation.
• Examples include: -4, -2, 0, 2, 4, 6, 8, 10, etc.

Properties:

• The sum of two even numbers is always even.
• The sum of an even number and an odd number is always odd.
• The product of two even numbers is always even.

Program to check Even Numbers:

Here's a simple C# program to check whether a given number is Even. This program prompts the user for input and displays the result accordingly.

 using System;  
 class OddChecker  
 {  
   static void Main()  
   {  
     Console.Write("Enter a number: ");  
     // Try to read and convert the input to an integer  
     try  
     {  
       int number = Convert.ToInt32(Console.ReadLine());  
       if(number%2==0)  
                     Console.WriteLine($"The provided number {number} is Even.");  
                else  
                     Console.WriteLine($"The provided number {number} is not Even.");  
     }  
     catch (FormatException)  
     {  
       Console.WriteLine("Please enter a valid integer.");  
     }  
   }  
 }  

How the Programs Works:

• The program uses a try-catch block to handle any invalid inputs.
• Then checks if the number is divisible by 2.
• The result is displayed to the user.

How to Run the Program:

1. Open your C# development environment (like Visual Studio or Visual Studio Code).
2. Create a new Console Application.
3. Copy and paste the code into the Main class.
4. Run the application. You will be prompted to enter a number.
5. Enter a number, and the program will tell you if it's even or odd.

Thanks