英文:
int data type in Go
问题
我是新手学习Go语言，并尝试在Go中运行一些示例代码。
在Go中，int不是一个关键字，所以我声明了一个名为int的变量。
package main
import "fmt"
func main() {
var int int = 8
fmt.Println(int)
var number int = 10
fmt.Println(number)
}
当我构建这段代码时，我得到以下错误：
[dev@go test]$ go build variables.go
# command-line-arguments
./variables.go:8: int is not a type
我试图理解为什么会出现这个错误，以及var int int是如何使int成为一个不可用的数据类型的。
英文:
I am new to Go language and was trying out few examples in GO.
In GO int is not a keyword so I declared a variable with name as int.
package main
import "fmt"
func main() {
var int int = 8
fmt.Println(int)
var number int = 10
fmt.Println(number)
}
Now when I build this code I get following error:
[dev@go test]$ go build variables.go
# command-line-arguments
./variables.go:8: int is not a type
I am trying to understand the reason why this is seen and what did var int int do such that int becomes an unavailable data type.
答案1
得分: 3
包 main
import "fmt"
func main() {
// int 是预声明的类型标识符
var int int = 8
// int 是变量标识符
fmt.Println(int)
// 错误：int 不是一个类型
var number int = 10
fmt.Println(number)
}
你正在遮蔽 int 标识符。
参见 Go 编程语言规范。
Go 是一种块结构化的编程语言：
int 是一个预声明的标识符，并且在全局作用域中隐式声明。
在函数内部声明的变量标识符的作用域从声明的末尾开始，到最内层的包含块的末尾结束。
语句
var int int = 8
使用预声明的 int 类型来声明一个变量标识符 int，遮蔽了预声明的标识符：变量遮蔽。
英文:
package main
import "fmt"
func main() {
// int is a predeclared type identifier
var int int = 8
// int is a variable identifier
fmt.Println(int)
// error: int is not a type
var number int = 10
fmt.Println(number)
}
You are shadowing the int identifier.
See The Go Programming Language Specification.
Go is a block structured programming language:
int is a predeclared identifier and is implicitly declared in the universe block.
The scope of a variable identifier declared inside a function begins at the end of the declaration and ends at the end of the innermost containing block.
The statement
var int int = 8
uses the predeclared int type to declare a variable identifier int, shadowing the predeclared identifier: Variable shadowing.
答案2
得分: 0
在Go语言中，int是一个预定义的标识符，因此不能用作变量名。所以将第一个变量重命名为其他任何名称，比如num1，它就可以编译通过了！
package main
import "fmt"
func main() {
var num1 int = 8
fmt.Println(num1)
var number int = 10
fmt.Println(number)
}
希望这可以帮到你！
英文:
In Go int is a predefined identifier, therefore it cannot be used as a variable name. So rename the first variable to anything else. Such as num1 and it will compile!
package main
import "fmt"
func main() {
var num1 int = 8
fmt.Println(num1)
var number int = 10
fmt.Println(number)
}
Hope this helps!
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