Skip to content

APC-PRAC-036.c

Problem Statement

Check krishnamurty number.

Metadata

Property Detail
Author Amit Dutta amitdutta4255@gmail.com
Date 12 Dec 2025
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 factorial(int);
int checkKrishnamurty(int);

int factorial(int n)
{
    int i, fact = 1;
    for (i = 1; i <= n; i++)
        fact *= i;
    return fact;
}

int checkKrishnamurty(int n)
{
    int temp1 = n, temp2 = 0;
    while (temp1 > 0)
    {
        temp2 += factorial(temp1 % 10);
        temp1 /= 10;
    }
    if (temp2 == n)
        return 1;
    else
        return 0;
}

int main()
{
    int n;
    printf("Enter the number: ");
    scanf("%d", &n);
    if (checkKrishnamurty(n))
        printf("\nInput %d is a Krishnamurty number.", n);
    else
        printf("\ninput %d is not a Krishnamurty number.", n);
    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-036.c):

    #include <stdio.h>

    int factorial(int);
    int checkKrishnamurty(int);

    int factorial(int n)
    {
        int i, fact = 1;
        for (i = 1; i <= n; i++)
            fact *= i;
        return fact;
    }

    int checkKrishnamurty(int n)
    {
        int temp1 = n, temp2 = 0;
        while (temp1 > 0)
        {
            temp2 += factorial(temp1 % 10);
            temp1 /= 10;
        }
        if (temp2 == n)
            return 1;
        else
            return 0;
    }

    int main()
    {
        int n;
        printf("Enter the number: ");
        scanf("%d", &n);
        if (checkKrishnamurty(n))
            printf("\nInput %d is a Krishnamurty number.", n);
        else
            printf("\ninput %d is not a Krishnamurty number.", n);
        return 0;
    }