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lucproblem015.c

Problem Statement

Write a program that defines a function that calculates power of one number reaised to another and factorial value of a number in one cell.

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

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  • Pointers
  • Recursion
  • Sorting (possible)
  • Iteration

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Source Code

#include <stdio.h>

void bothPowerFactorial(double, int, int, double *, long long *);

int main()
{
    double a, resultPower;
    int b, factN;
    long long resultFactorial;
    printf("Enter a and b for calculating a raised to b: ");
    scanf("%lf %d", &a, &b);
    printf("Enter number to calculate the factorial: ");
    scanf("%d", &factN);
    if (b < 0 || factN < 0)
    {
        printf("\nOnly non-negative integer is allowed as input of b and factorial.");
        return 1;
    }
    bothPowerFactorial(a, b, factN, &resultPower, &resultFactorial);
    printf("\n%g Raised to %d: %g"
           "\nFactorial of %d: %lld",
           a, b, resultPower, factN, resultFactorial);
    return 0;
}

void bothPowerFactorial(double a, int b, int n, double *resultPower, long long *resultFactorial)
{
    double tempResultPower = 1;
    long long tempResultFactorial = 1;
    int i;

    for (i = 1; i <= b; i++)
        tempResultPower *= a;

    for (i = 1; i <= n; i++)
        tempResultFactorial *= i;

    *resultPower = tempResultPower;
    *resultFactorial = tempResultFactorial;
}

Explanation

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    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 (lucproblem015.c):

    #include <stdio.h>

    void bothPowerFactorial(double, int, int, double *, long long *);

    int main()
    {
        double a, resultPower;
        int b, factN;
        long long resultFactorial;
        printf("Enter a and b for calculating a raised to b: ");
        scanf("%lf %d", &a, &b);
        printf("Enter number to calculate the factorial: ");
        scanf("%d", &factN);
        if (b < 0 || factN < 0)
        {
            printf("\nOnly non-negative integer is allowed as input of b and factorial.");
            return 1;
        }
        bothPowerFactorial(a, b, factN, &resultPower, &resultFactorial);
        printf("\n%g Raised to %d: %g"
               "\nFactorial of %d: %lld",
               a, b, resultPower, factN, resultFactorial);
        return 0;
    }

    void bothPowerFactorial(double a, int b, int n, double *resultPower, long long *resultFactorial)
    {
        double tempResultPower = 1;
        long long tempResultFactorial = 1;
        int i;

        for (i = 1; i <= b; i++)
            tempResultPower *= a;

        for (i = 1; i <= n; i++)
            tempResultFactorial *= i;

        *resultPower = tempResultPower;
        *resultFactorial = tempResultFactorial;
    }