C# Program to Read a String and find the Sum of all Digits in the String

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This is a C# Program to read a string and find the sum of all digits in the string.

Problem Description

This C# Program Reads a String and find the Sum of all Digits in the String.

Problem Solution

Here the program accepts a character string, then add all the character’s integer value, thereby summing all the digits of a string.

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Program/Source Code

Here is source code of the C# Program to Print the Sum of all the Multiples of 3 and 5. The C# program is successfully compiled and executed with Microsoft Visual Studio. The program output is also shown below.

/*
 * C# Program to Read a String and find the Sum of all Digits in the String
 */
using System;
class program
{
    public static void Main()
    {
        char[] string1 = new char[20];
        int count, nc = 0, sum = 0, n, i;
        Console.WriteLine("Enter the Length of the sentence  :");
        n = int.Parse(Console.ReadLine());
        Console.WriteLine("Enter the string1 containing both digits and alphabet :");
        for (i = 0; i < n; i++)
        {
            string1[i] = Convert.ToChar(Console.Read());
        }
 
        for (count = 0; string1[count] != '\0'; count++)
        {
            if ((string1[count] >= '0') && (string1[count] <= '9'))
            {
                nc += 1;
                sum += (string1[count] - '0');
            }
        }
        Console.WriteLine("NO. of Digits in the string1 = {0}", nc);
        Console.WriteLine("Sum of all digits = {0}", sum);
        Console.ReadLine();
        Console.ReadLine();
    }
}
Program Explanation

In this C# program, we are reading the length of the sentence using ‘n’ variable. Using for loop we are splitting the string in digits and alphabet as separate using ToChar() function.

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Another for loop is used to check that value of ‘string1[]’ variable is greater than or equal to 0 and less than or equal to 9 using Logical AND operators. If the condition is true then execute the statement. Then add all the character’s integer value, thereby summing all the digits of a string. Print the sum of all digits in the string.

Runtime Test Cases
 
Enter the Length of the sentence  :
6
Enter the string1 containing both digits and alphabet :
SAN193
NO. of Digits in the string1 = 3
Sum of all digits = 13

Sanfoundry Global Education & Learning Series – 1000 C# Programs.

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Manish Bhojasia - Founder & CTO at Sanfoundry
Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He lives in Bangalore, and focuses on development of Linux Kernel, SAN Technologies, Advanced C, Data Structures & Alogrithms. Stay connected with him at LinkedIn.

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