Write a program to find the largest number between 3 numbers.

Program

using System;

namespace ProgrammingQuestion
{
 class Program
 {
   static void Main(string[] args)
   {
     //Variable Declaration
     string firstNumberVal,secondNumberVal, thirdNumberVal, message;
     int firstNumber, secondNumber, thirdNumber;

     //User Input
     Console.Write("Enter First Number:");
     firstNumberVal = Console.ReadLine();
     firstNumber = Convert.ToInt32(firstNumberVal);
     Console.Write("Enter Second Number:");
     secondNumberVal = Console.ReadLine();
     secondNumber = Convert.ToInt32(secondNumberVal);
     Console.Write("Enter Third Number:");
     thirdNumberVal = Console.ReadLine();
     thirdNumber = Convert.ToInt32(thirdNumberVal);
     
     //Greater Number Logic
     if(firstNumber > secondNumber && firstNumber > thirdNumber)
     {
       message = $"Number {firstNumber} is greater.";
     }
     else if(secondNumber > firstNumber && secondNumber > thirdNumber)
     {
       message = $"Number {secondNumber} is greater.";
     }
     else if(thirdNumber > firstNumber  && thirdNumber > secondNumber)
     {
       message = $"Number {thirdNumber} is greater.";
     }
     else
     {
       message = $"No Number is greater.";
     }
     
     //Print Result
     Console.WriteLine(message);
     
     Console.Read();
   }
 }
}

Output

Enter First Number:10
Enter Second Number:20
Enter Third Number:15
Number 20 is greater.