IP-01.c

Problem Statement

IP-01.c

Write a program to compute the sum and product of digits of an integer using user defined functions.

Source Code

#include <stdio.h>

int sum_of_digits(int);
int product_of_digits(int);

int main()
{
    int num;
    printf("Enter the number: ");
    scanf("%d", &num);
    printf("\nSum of digits of %d = %d", num, sum_of_digits(num));
    printf("\nProduct of digits of %d = %d", num, product_of_digits(num));
    return 0;
}

int sum_of_digits(int num)
{
    int sum = 0;
    while (num > 0)
    {
        sum += num % 10;
        num /= 10;
    }
    return sum;
}

int product_of_digits(int num)
{
    int product = 1;
    while (num > 0)
    {
        product *= num % 10;
        num /= 10;
    }
    return product;
}

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● Author - Amit Dutta · Updated - 03 Jan 2026