if...else

import "fmt"

func main() {

    // if .. else ..

    if 7%2 == 0 {

        fmt.Println("7 is even")

    } else {

        fmt.Println("7 is odd")

    }

    // if ..

    if 8%4 == 0 {

        fmt.Println("8 is divisible by 4")

    }

    // if ..else if..else  格式必须标准 else 必须在上一大括号结束后

    if num := 9; num <</span> 0 {

        fmt.Println(num, "is negative")

    } else if num <</span> 10 {

        fmt.Println(num, "has 1 digit")

    } else {

        fmt.Println(num, "has multipe digits")

    }

}