Skip to content

pc-ip-01.c

Problem Statement

Question 1: Write a program to compute the sum and product of digits of an integer using user-defined functions.

Metadata

Property Detail
Author Amit Dutta amitdutta4255@gmail.com
Date 05 Jan 2026
License MIT License (See the LICENSE file for details)
Difficulty Beginner (index: 2 / 10)

Concepts

Beta Feature

This concept detection system is still in beta and may occasionally show incorrect or incomplete results.

  • Recursion
  • Iteration

Actions

Raw View on GitHub

You can print or save this file by opening Raw and using your browser.

Source Code

#include <stdio.h>

int sum(int);
int product(int);

int main()
{
    int num;
    printf("Enter the number: ");
    scanf("%d", &num);
    printf("\nSum of digit: %d", sum(num));
    printf("\nProduct of digit: %d", product(num));
    return 0;
}

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

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

Explanation

Explain with AI

Copy the prompt below and paste it into any AI assistant.

    You are explaining a C programming code to a beginner.

    STRICT RULES:

    - Only use the given code. Do NOT assume anything not present.

    - Do NOT add extra examples.

    - Keep explanation clear and short.

    - If something is unclear, say "Not clear from code".

    - Follow the exact format below. Do NOT change headings.

    FORMAT:

    [START]

    ## What it does

    (Explain the overall purpose in 1-2 sentences)

    ## Step-by-step

    (Explain how the code works in steps, simple language)

    ## Key Concepts

    (List concepts like loop, condition, function, etc.)

    ## Notes

    (Mention any limitations, errors, or assumptions)

    [END]

    CODE (pc-ip-01.c):

    #include <stdio.h>

    int sum(int);
    int product(int);

    int main()
    {
        int num;
        printf("Enter the number: ");
        scanf("%d", &num);
        printf("\nSum of digit: %d", sum(num));
        printf("\nProduct of digit: %d", product(num));
        return 0;
    }

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

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