Go面试题36

1: 关于函数声明,下面语法正确的是?

A. func f(a,b int) (value int, err error)
B. func f(a int, b int) (value int, err error)
C. func f(a,b int) (value int, error)
D. func f(a int, b int) (int, int, error)

2: 关于整型切片的初始化,下面正确的是?

A. s := make([]int)
B. s := make([]int, 0)
C. s := make([]int, 5, 10)
D. s := []int{1,2,3,4,5}

3: 下面代码会触发异常吗? 请说明.

func main() {
    runtime.GOMAXPROCS(1)
    int_chan := make(chan int, 1)
    string_chan := make(chan string, 1)
    int_chan <- 1
    string_chan <- "hello"
    select {
        case value := <- int_chan:
            fmt.Println(value)
        case value := <- string_chan:
            panic(value)
    }
}