基本语法练习 打印 乘法表

package main

import ("fmt")

func main(){

    for n:=1;n<=9;n++{

	    for m:=1;m<=n;m++{

		    fmt.Print(m,"*",n,"=",m*n,"\t")

		}

		fmt.Println()

	}

}

有意思的 裸返回 等价

package main

import "fmt"

func swap(x,y string)(b,a string){

     a = x

     b = y

     return

}

func main(){

    var first = "hello"

	var second = "world"

	fmt.Println(swap(first,second))

}

package main

import "fmt"

func swap(x,y string)(string,string){

    return y,x

}

func main(){

    var first = "hello"

	var second = "world"

	first,second = swap(first,second)

	fmt.Println(first,second)

}