Create Factorial Calculator in C Language with Free Codes

Index

Introduction

Hello, Welcome to the Creation Article of Factorial Calculator in C Language. This Project Level is basic means this project covers the basic topic to make a project: So Let’s start,

Factorial Calculator Function

Th Factorial Function Divides into three main points: –

1. “factorial” : A recursive function which is used for calculates the factorial of a given number “n”.
2. If “n” is 0 or 1, the function returns 1 (base case).
3. Otherwise, the function returns “n” multiplied by the factorial of “n-1” (recursive case).

Output – Factorial Calculator

Here is the Output of the C Language Project : We put here 8 for check our calculator is working properly,

Enter a number to calculate its factorial: 8
The factorial of 8 is: 40320

Project Codes

Here is the Complete Project code of the Factorial Calculator Project,

#include <stdio.h>

// Function to calculate the factorial of a number
unsigned long long factorial(int n) {
    if (n == 0 || n == 1) {
        return 1;
    }
    return n * factorial(n - 1);
}

int main() {
    int number;
    unsigned long long result;

    // Input a number from the user
    printf("Enter a number to calculate its factorial: ");
    scanf("%d", &number);

    // Ensure the number is non-negative
    if (number < 0) {
        printf("Factorial is not defined for negative numbers.\n");
    } else {
        result = factorial(number);
        printf("The factorial of %d is: %llu\n", number, result);
    }

    return 0;
}