Go的指针

&取内存地址，*取值

package main

import (
	"fmt"
)

func main() {
	var num int = 45688
	fmt.Printf("num的地址是%v\n", &num)
	// 定义指针赋值
	var ptr1 *int = &num
	fmt.Printf("ptr1的地址是%v\n", ptr1)
	fmt.Printf("ptr1本身的地址是%v\n", &ptr1)
	fmt.Printf("ptr1指向的值是%v\n", *ptr1)
	// 修改指针的值
	*ptr1 = 200
	fmt.Printf("num=%v\n", num)
	fmt.Printf("*ptr1=%v\n", *ptr1)
}