我的名字叫浩仔 itcuihao

package main import "fmt" func main() { a := 2 b := 2 fmt.Println(add(a, b)) fmt.Println(sub(a, b)) fmt.Println(mul(a, b)) fmt.Println(div(a, b)) } func add(a, b int) int { if b == 0 { return a } tmp := 0 for b != 0 { tmp = (a & b) << 1 a = a ^ b b = tmp } return a } func addr(a, b int) int { if b == 0 { return a } tmp := (a