factorial calculation

factorial.c

#include <stdio.h>

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

int main()
{
    printf("%d", factorial(5)); // 5! = 120

    return 0;
}

factorial.go

package main
import "fmt"

func facto(n int) int {
  if n == 0 {
    return 1 
  }
  return n * facto(n - 1)
}

func main() {
	f := facto(5)
	fmt.Println(f) // 5! = 120
}

factorial.lisp

(defun factorial (n)
  (if (<= n 1)
      1
      (* n (factorial (- n 1)))))

(factorial 10)

factorial.py

def factorial(n: int):
    if n == 0 :
        return 1
    
    return n * factorial(n - 1)

print(factorial(5)) # 5! = 120

factorial.rs

fn factorial(n: i8) -> i8 {
    if n == 0 {
        return 1;
    }
    n * factorial(n - 1)
}

fn main() {
    println!("{}", factorial(5)); // 5! = 120
}