recursive-function.go

package main

import "fmt"

// same as other language we can create recursive function
// to call itself until the base condition met

func factorialLoop(value int) int {

	if value < 0 {
		return -1 // Factorial is not defined for negative numbers
	} else if value == 0 {
		return 1 // Factorial of 0 is 1
	} else if value == 1 {
		return 1 // Factorial of 1 is 1
	}

	result := 1
	// if the number greater than 1 so we loop to multiply those number
	for number := value; number > 1; number-- {
		result *= number
	}

	return result
}

func factorialRecursive(value int) int {
	if value <= 1 {
		return 1
	} else {
		return value * factorialRecursive(value-1)
	}
}

func main() {

	// factorial recursive result
	result := factorialRecursive(5)
	fmt.Println("Recursive result :", result)

	result = factorialLoop(5)
	fmt.Println("Loop result :", result)
}