C# program to find largest of two numbers

Learn, how to find largest number among two numbers using the simple if-else statement and ternary operator in C#?
Submitted by IncludeHelp, on April 09, 2019 [Last updated : March 18, 2023]

Given two integer numbers and we have to find largest number using C# program.

Finding largest of two numbers

To find the largest number from given two numbers – we will compare their values using either the simple if-else statement or ternary operator. If the first number is greater than the second number, assign the first number to the variable in which we will store the largest number, if the first number is not the greater than the second number then assign the second number to the variable.

Let suppose given numbers are a and b and we have to store the largest number in large.

Using if-else

    if (a > b)
        large = a;
    else
        large = b;

Using ternary operator

    large = (a > b) ? a : b;

C# code to find largest of two numbers

Here, we are asking for two integer numbers from the user and finding the largest one using if-else and ternary operator .

// C# program to find largest of two numbers

using System;
using System.IO;
using System.Text;

namespace IncludeHelp {
  class Test {
    // Main Method 
    static void Main(string[] args) {
      int a;
      int b;
      int large;

      //input the numbers
      Console.Write("Enter first number : ");
      a = Convert.ToInt32(Console.ReadLine());
      Console.Write("Enter second number: ");
      b = Convert.ToInt32(Console.ReadLine());

      //finding largest number using if-else
      if (a > b)
        large = a;
      else
        large = b;

      //printing 
      Console.WriteLine("Using if-else...");
      Console.WriteLine("Largest number is {0}", large);

      //finding largest number using ternary operator 
      large = (a > b) ? a : b;

      //printing 
      Console.WriteLine("Using if-else...");
      Console.WriteLine("Largest number is {0}", large);

      //hit ENTER to exit the program
      Console.ReadLine();
    }
  }
}

Output

First run:
Enter first number : 10
Enter second number: 20
Using if-else...
Largest number is 20
Using if-else...
Largest number is 20

Second run:
Enter first number : 20
Enter second number: 10
Using if-else...
Largest number is 20
Using if-else...
Largest number is 20

Third run:
Enter first number : 20
Enter second number: 20
Using if-else...
Largest number is 20
Using if-else...
Largest number is 20

C# Basic Programs »


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