Write a program to find the sum of digits of the entered number.

Dr. A.P.J. Abdul Kalam Technical University, Lucknow

KCS101 / KCS201 Programming for Problem Solving - Using C Language

Lab Exercises

17. Write a program to find the sum of digits of the entered number.

/*

 File: Prgrm17.c

 Author: Aditya Saini

 Date: Sept 30, 2019

 Description: Program to find the sum of digits of the entered number.

*/

#include <stdio.h>

int main (void)

{

               int number;
               int sum_of_digit;
               int temp;

               //Input number.
               printf ("Input number: ");
               scanf ("%d", &number);

               //Finding the sum of digits.

               temp = number;
               sum_of_digit = 0;
               while (temp != 0)
               {
                              sum_of_digit = sum_of_digit + temp % 10;
                              temp = temp / 10; 
               }

               //Output the result.
               printf ("Sum of digits: %d", sum_of_digit);

               return 0;

};

Output

Input number: 12345

Sum of digits: 15