第八课 go的条件语句

package main

import "fmt"

func main() {
    flag:= 10

    if flag > 20 {
        fmt.Println("flag > 20")

    } else {
        fmt.Println("flag < 20")
    }
}

package main

import "fmt"

func main() {
    var mark = "hello"

    switch mark {
    case "hello":
        fmt.Println("hello");case "others" :
        fmt.Println("others")
    }

switch {
case "hello" == mark:
   fmt.Println("is hello" )
case "AAAA" != mark:
   fmt.Println("not AAAA")
}

}

select {
    case communication clause  :
       statement(s);      
    case communication clause  :
       statement(s); 
    /* 你可以定义任意数量的 case */
    default : /* 可选 */
       statement(s);
}