C#: Display the individual digits of a given number

Last update on December 20 2024 12:43:12 (UTC/GMT +8 hours)

Write a program in C# Sharp to display the individual digits of a given number using recursion.

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Sample Solution:

C# Sharp Code:

using System;

// Class definition named 'RecExercise4'
public class RecExercise4
{
    // Main method, the entry point of the program
    static void Main()
    {
        // Display a description of the program
        Console.Write("\n\n Recursion : Display the individual digits of a given number :\n");
        Console.Write("------------------------------------------------------------------\n");
        Console.Write(" Input any number : ");
        int num = Convert.ToInt32(Console.ReadLine()); // Read user input for the number

        // Display the message indicating the digits in the entered number
        Console.Write(" The digits in the number {0} are : ", num);

        // Call a recursive function to separate and display the individual digits of the entered number
        separateDigits(num);
        Console.Write("\n\n");
    }

    // Recursive function to separate and display individual digits of a number
    static void separateDigits(int n)
    {
        // Base case: if the number has only one digit
        if (n < 10)
        {
            Console.Write("{0}  ", n); // Display the single digit
            return;
        }

        // Recursive call: separateDigits method is called for the quotient of the number divided by 10
        separateDigits(n / 10);
        Console.Write(" {0} ", n % 10); // Display the remainder (last digit)
    }
}

Sample Output:

 Recursion : Display the individual digits of a given number :                                                
------------------------------------------------------------------                                            
 Input any number : 25                                                                                        
 The digits in the number 25 are : 2   5

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