go入门--mult_returnval

package main
 
import "fmt"
 
var num1, num2 int = 10, 20
var sum_, diff, mlti int
 
func main() {
	sum_, diff, mlti = calculate1(num1, num2)
	PrintValues()
	sum_, diff, mlti = calculate2(num1, num2)
	PrintValues()
}
 
func PrintValues() {
	fmt.Printf("sum = %d, differce = %d, mlti = %d\n", sum_, diff, mlti)
}
 
func calculate1(input1, input2 int) (int, int, int) {
	return input1 + input2, input1 - input2, input1 * input2
}
 
func calculate2(input1, input2 int) (x2 int, x3 int, x4 int) {
	x2 = input1 + input2
	x3 = input1 - input2
	x4 = input1 * input2
	return
}