C Exercises: Accepts a positive integer less than 500 and prints out the sum of the digits of this number

C Basic Declarations and Expressions: Exercise-62 with Solution

Write a C program that accepts a positive integer less than 500 and prints out the sum of the digits of this number.

Test data and expected output:
Input a positive number less than 500:
Sum of the digits of 336 is 12

Pictorial Presentation:

Sample Solution:

C Code:

#include <stdio.h>
  int main() 
  {
    int a, x = 0, y;
    printf("Input a positive number less than 500: \n");
    scanf("%d", & a);
    y = a;
    if (y < 1 || y > 999) 
    {
      printf("The given number is out of range\n");
    } 
    else 
    {
      x += y % 10;
      y /= 10;
      x += y % 10;
      y /= 10;
      x += y % 10;
      printf("Sum of the digits of %d is %d\n", a, x);
    }
    return 0;
  }

Sample Output:

Input a positive number less than 500: 
Sum of the digits of 347 is 14

Flowchart:

C programming Code Editor:

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