package main

import "fmt"

func plus(a int, b int) int {
	return a + b
}

func plusPlus(a, b, c int) int {
	return a + b + c
}

func plusNamed(a, b int) (result int) {
	result = a + b
	return
}

func plusDescription(a int, b int) (int, string) {
	result := a + b
	return result, fmt.Sprintf("%d+%d = %d", a, b, result)
}

func main() {

	res := plus(1, 2)
	fmt.Println("1+2 =", res)

	res = plusPlus(1, 2, 3)
	fmt.Println("1+2+3 =", res)

	res = plusNamed(1, 2)
	fmt.Println("1+2 =", res)

	_, desc := plusDescription(1, 2)
	fmt.Println(desc)
}