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Go Cheatsheet - Get User Input from Stdin

Get User Input from Stdin

Scanln & Scanf

var name string
fmt.Scanln(&name)  // this will scan only one string token (if there is a space in your string)

var age int
fmt.Scanf("%d\n", &age)

bufio.NewScanner

sc := bufio.NewScanner(os.Stdin)
sc.Scan()
txt := sc.Text()  // read one line and save text to txt, it will contain spaces and exclude the ending \n
fmt.Println(txt)

bufio.NewReader

nr := bufio.NewReader(os.Stdin)
input, _ := nr.ReadString('\n')  // read till \n, the returned string will contain the trailing \n
input = strings.TrimRight(input, "\n")  // we remove the trailing \n
fmt.Println(input)
 
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