Go Example--if语句

package main

import "fmt"

func main()  {
	//if else 条件都不需要括号，{}是需要的
	if 7 % 2  == 0 {
		fmt.Println("7 is even")
	} else {
		fmt.Println("7 is odd")
	}

	if 8%4 == 0 {
		fmt.Println("8 is divisible by 4")
	}

	//定义了一个num 局部变量，只能在if,else if , else中使用
	if num := 9; num < 0 {
		fmt.Println(num,"is negative")
	} else if num < 10 {
		fmt.Println(num,"has 1 digit")
	} else {
		fmt.Println(num, "has multiple digits")
	}

}