Skip to content

APC-PRAC-017.c

Problem Statement

Write a program to check perfect number.

Metadata

Property Detail
Author Amit Dutta (amitdutta4255@gmail.com)
License MIT
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 main()
{
    int num, i, divisibleSum = 0;
    printf("Enter a number : ");
    scanf("%d", &num);
    for (i = 1; i <= num / 2; i++)
    {
        if (num % i == 0)
        {
            divisibleSum += i;
        }
    }
    if (divisibleSum == num)
        printf("\nInput %d ia a Perfect Number.", num);
    else
        printf("\nInput %d is NOT a Perfect Number.", num);
    return 0;
}

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 (APC-PRAC-017.c):

    #include <stdio.h>

    int main()
    {
        int num, i, divisibleSum = 0;
        printf("Enter a number : ");
        scanf("%d", &num);
        for (i = 1; i <= num / 2; i++)
        {
            if (num % i == 0)
            {
                divisibleSum += i;
            }
        }
        if (divisibleSum == num)
            printf("\nInput %d ia a Perfect Number.", num);
        else
            printf("\nInput %d is NOT a Perfect Number.", num);
        return 0;
    }