/*
Source File: sumDigit.c
Author: Yana
Date: YEAR/MONTH/DAY
This program sums the digits of a 3-digit number
Input: a 3-digit non-negative integer
Output: The sum of the digits of the given input number
Algorithm: Extract the digits using division by 10 and
remainder operation ( modulo 10).
*/
#include<stdio.h >
int main(){
- int number = 0; /* input number, declaration and initialization */
- int sum = 0; /* sum of the digits, declaration and initialization */
- printf("Please enter a 3-digit number: "); /* user prompt */
- scanf ("%d", &number);
- /* extract last digit (units) and add the extracted digit to the sum */
- sum = sum + number % 10;
- /* leave the number with two other digits */
- number = number / 10;
- /* extract middle digit (tens) and add the extracted digit to the sum */
- sum = sum + number % 10;
- /* leave the number with one digit (hundreds)*/
- number = number / 10;
- /* extract the remaining digit (hundreds) and add the extracted digit to the sum */
- sum = sum + number % 10;
- /* print the results */
- printf("The sum of digits is: %d\n", sum);
- return 0;
}