golang的变量的创建及打印

package main

import "fmt"

func main() {
	fmt.Println("A", "B", "C")
	a := 123
	b := 456
	c := 789
	fmt.Println(a, b, c)
	var uername = "admin"
	var username1 string = "admin"
	fmt.Println(username1)
	fmt.Println(uername)
	a = 1234
	fmt.Println(a)
	var admin, _ = getuserinfo()
	fmt.Println(admin)
}

func getuserinfo() (string, int) {
	return "admin", 123

}

[Running]
A B C
123 456 789
admin
admin
1234
admin