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C#.NET Program to read a 4-digit integer and output the sum of its digits

By Ashok Nalam on 16 Mar 2015 | Category: C# | Tagged: number .NET 
In this snippet we will write C#.NET program to read a four digit integer and output the sum of its digits. Example: If user enters number as 1234 then the output will be 1+2+3+4=9.
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Introduction

In general programming assignments people will ask to write program which asks the user for a four digit number and outputs the sum of its digits. In this snippet we tried to achieve the same using while loop.

Example:

If user enters number as 1234 then the output will be 1+2+3+4= 9.

C# Program:

    class SumOfDigitsProgram
    {
        public static void Main()
        {
            int sum = 0;
            Console.WriteLine(" /********** Program to sum of Digits ************/");
            Console.Write("Enter a number:");
            int number = int.Parse(Console.ReadLine());
            int tempnumber = number;
            while (tempnumber > 0)
            {
                sum += (tempnumber % 10); // add last digit of tempnumber to sum
                tempnumber /= 10; // divide tempnumber by 10 to cuts the last digit
            }
            Console.Write("Sum of {0} digit is {1}",number,sum);
            Console.Read();
        }
    }

Output:

.NET Program to read a 4-digit integer and output the sum of its digits

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