//语法:
//1. 声明
var 变量名 类型
//2. 赋值
变量名=值

//示例:
var smallming string
smallming = "英文名"

//语法:
var 变量名 类型 = 值

//示例
var smallming string = "英文名"

//语法:
var 变量名 = 值

//示例:
var smallming = "英文名"

//语法:
变量名 := 值

//示例:
smallming := "英文名"

func main() {
    var a, b, c int
    a, b, c = 1, 2, 3
    fmt.Println(a, b, c)
}

func main() {
    var a, b, c, d = 1, 2, 3, false
    fmt.Println(a, b, c, d)
}

func main() {
    var (
        a = 1
        b = true
        c = "测试"
    )
    fmt.Println(a, b, c)
}

func main() {
    var (
        a = 1
        b = true
        c = "测试"
    )
    //短变量操作多个值时只要保证里面至少有一个新变量
    b, c, d := false, "smallming", 3
    fmt.Println(a, b, c, d)
}