Go - scan

 

func getUserInput() {
    fmt.Print("Please give me your name: ")
    var name string
    // Scan scans text read from standard input, storing successive space-separated values into successive arguments. 
    // Newlines count as space. It returns the number of items successfully scanned. 
    // If that is less than the number of arguments, err will report why.
    fmt.Scan(&name)
    fmt.Printf("Your name is %s.\n", name)

    fmt.Print("Please give me your country: ")
    var country string
    // Scanln is similar to Scan, but stops scanning at a newline and after the final item there must be a newline or EOF.
    fmt.Scanln(&country)
    fmt.Printf("Your country is %s.\n", country)
}

 

zzh@ZZHPC:/zdata/Github/mastering-go-expertise$ go run .
Please give me your name: Zhang Zhihui
Your name is Zhang.
Please give me your country: Your country is Zhihui.

 

func getUserInput() {
    fmt.Print("Please give me your name: ")
    scanner := bufio.NewScanner(os.Stdin)
    scanner.Scan() // use `for scanner.Scan()` to keep reading
    line := scanner.Text()
    fmt.Printf("Your name is %s.\n", line)

    fmt.Print("Please give me your country: ")
    var country string
    fmt.Scanln(&country)
    fmt.Printf("Your country is %s.\n", country)
}

 

zzh@ZZHPC:/zdata/Github/mastering-go-expertise$ go run .
Please give me your name: Zhang Zhihui
Your name is Zhang Zhihui.
Please give me your country: China
Your country is China.

 

func getUserInput() {
    fmt.Print("Please give me your name: ")
    reader := bufio.NewReader(os.Stdin)
    line, err := reader.ReadString('\n')
    if err != nil {
        panic(err)
    }
    fmt.Printf("Your name is %s.\n", line)

    fmt.Print("Please give me your country: ")
    var country string
    fmt.Scanln(&country)
    fmt.Printf("Your country is %s.\n", country)
}

 

zzh@ZZHPC:/zdata/Github/mastering-go-expertise$ go run .
Please give me your name: Zhang Zhihui
Your name is Zhang Zhihui
.
Please give me your country: China
Your country is China.