luc004.c

Problem Statement

luc004.c

If a five digit number is input through the keyboard, write a program to calculate the sum of it's digit. (Hint : Use the modulus operator %)

Source Code

#include <stdio.h>
int main()
{
    int inp, result = 0, i, temp;
    printf("Enter a five digit number : ");
    scanf("%d", &inp);
    if (inp < 10000 || inp > 99999)
    {
        printf("\nPlease enter a valid five digit number.");
        return 1;
    }
    temp = inp;
    for (i = 1; i <= 5; i++)
    {
        result = result + (inp % 10);
        inp = inp / 10;
    }
    printf("\nSum of the digit '%d' is : %d", temp, result);
    return 0;
}

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● Author - Amit Dutta · Updated - 12 Dec 2025