go的指针引用对象一样，但是地址肯定不一样，值类型相等，指针类型不相等

func main() {
   s:=&G{"fsf",19}
   y:=new(G)
   yw:=new(G)
   x:=&G{"fsf",19}
   sss,err:=x.Getstr()
   if err != nil{
      fmt.Println(err)
   }
   fmt.Println(sss)
   w:=s
   fmt.Printf("s is ptr:%p\nx is ptr:%p\nw is ptr:%p\n",s,x,w)
   fmt.Printf("y is ptr:%p\nyw is ptr:%p",y,yw)

}

// print

s is ptr:0xc000004078
x is ptr:0xc0000040c0
w is ptr:0xc000004078
y is ptr:0xc000004090
yw is ptr:0xc0000040a8
进程 已完成，退出代码为 0