Golang值傳遞和指針傳遞
package main
import (
"fmt"
)
func swap1(x, y, p *int) {
if *x > *y {
*x, *y = *y, *x
}
*p = *x * *y
}
func swap2(x, y int) (int, int, int) {
if x > y {
x, y = y, x
}
return x, y, x * y
}
func main() {
i := 9
j := 5
product := 0
swap1(&i, &j, &product)
fmt.Println(i, j, product) //5 9 45
a := 64
b := 23
a, b, p := swap2(a, b)
fmt.Println(a, b, p) //23 64 1472
}
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