Golang 关键字

关键字或保留词是一种语言中用于某些内部程序或代表某些预定动作的词。因此，这些词是不允许作为标识符使用的。这样做会导致编译时的错误。

例子

// Go program to illustrate the
// use of keywords
package main
import "fmt"
  
// Here, package, import, func,
// var are keywords
func main() {
  
// Here, a is a valid identifier
var a = "GeeksforGeeks" 
  
fmt.Println(a)
  
// Here, the default is an
// illegal identifier and
// compiler will throw an error
// var default = "GFG"
}

输出

GeeksforGeeks

Golang语言中共有 25个关键词 ，如下所示。

break
case
chan
const
continue
default
defer
else
fallthrough
for
func
go
goto
if
import
interface
map
package
range
return
select
struct
switch
type
var

例子

// Go program to illustrate 
// the use of keywords
  
// Here package keyword is used to 
// include main package in the program
package main
  
// import keyword is used to 
// import "fmt" in your package
import "fmt"
  
// func is used to
// create function
func main() {
  
    // Here, var keyword is used 
    // to create variables
    // Pname, Lname, and Cname 
    // are the valid identifiers
    var Pname = "GeeksforGeeks" 
    var Lname = "Go Language" 
    var Cname = "Keywords"
      
    fmt.Printf("Portal name: %s", Pname)
    fmt.Printf("\nLanguage name: %s", Lname)
    fmt.Printf("\nChapter name: %s", Cname)
  
}

输出

Portal name: GeeksforGeeks
Language name: Go Language
Chapter name: Keywords