Machine Problem

Design a program that will ask the user to give a number and then the program will compute the sum of all the digits of the given number using while loop statement.

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Program Listing

/* Problem No. 1

Design a program that will ask the user to give a number and then
the program will compute the sum of all the digits of the given
number using while loop statement.

Solution

sum_digits.c
 Author   : Jake Rodriguez Pomperada, MAED-IT, MIT
 Science Research Specialist II Technological University of the Philippines Visayas
 Address  : Capt. Sabi Street, Talisay City, Negros Occidental, Philippines
 Email    : jakerpomperada@gmail.com
 Tool     : Dev C++ Version 5.11
 Date     : December 25, 2021   9:46 PM Saturday
*/

#include <stdio.h>

int main()
{
    long int num=0, r=0, sum=0;
    printf("\n\n");
    printf("\tSum of Digits Using While Loop Statement in C");
	printf("\n\n");
	printf("\tGive a Number : ");
	scanf("%d",&num);
    sum = 0;
    while (num !=0){
    	r = num % 10;
    	sum+=r;
    	num/=10;
	}
    printf("\n");
    printf("\tThe total sum of the digits is %d.",sum);
    printf("\n\n");
    printf("\t\t End of Program");
    printf("\n\n");
}

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