C#: To calculate the sum of the individual digits of a specified number

Last update on December 20 2024 12:51:10 (UTC/GMT +8 hours)

Write a program in C# Sharp to create a function to calculate the sum of the individual digits of a given number.

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Sample Solution:

C# Sharp Code:

using System;

// Class definition named 'funcexer10'
public class funcexer10
{
    // Method to calculate the sum of individual digits of a number
    public static int SumCal(int n)
    {
        // Convert the number to a string
        string n1 = Convert.ToString(n);
        int sum = 0;

        // Loop through each digit in the number
        for (int i = 0; i < n1.Length; i++)
        {
            // Extract each digit and add it to the sum
            sum += Convert.ToInt32(n1.Substring(i, 1));
        }

        return sum; // Return the sum of individual digits
    }

    // Main method, the entry point of the program
    public static void Main()
    {
        int num;

        // Display a description of the program
        Console.Write("\n\nFunction : To calculate the sum of the individual digits of a number :\n");
        Console.Write("--------------------------------------------------------------------------\n");

        // Prompt the user to enter a number
        Console.Write("Enter a number: ");
        num = Convert.ToInt32(Console.ReadLine());

        // Calculate and display the sum of the digits of the input number
        Console.WriteLine("The sum of the digits of the number {0} is : {1} \n", num, SumCal(num));
    }
}

Sample Output:

Function : To calculate the sum of the individual digits of a number :                                        
--------------------------------------------------------------------------                                    
Enter a number: 25                                                                                            
The sum of the digits of the number 25 is : 7 

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