c/cpp

Factorial Using function | C programming language

Description

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Today we write a program of factorial program using function in c programming language.

So Now let's start the code..

#include<stdio.h>

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

int main()
{
    int n;
    printf("Enter the number : ");
    scanf("%d", &n);
    
    int fact = factorial(n);
    
    printf("The factorial of %d is %d", n, fact);
    return 0;
}

Output :

Enter the number : 6
The factorial of 6 is 720

Using recursive function

#include<stdio.h>

int factorial(int n){
    if(n==0){
        return 1;
    }
    return n * factorial(n-1);
}

int main()
{
    int n;
    printf("Enter the number : ");
    scanf("%d", &n);
    
    int fact = factorial(n);
    
    printf("The factorial of %d is %d", n, fact);
    return 0;
}

Output :

Enter the number : 6
The factorial of 6 is 720

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