如何使用扫描仪 bufio

Question

输入来自console124.0scanner := bufio.NewScanner(os.Stdin)    // Declare second integer, double, and String variables.    var in uint64    var fl float64    var st string    // Read and save an integer, double, and String to your variables.     var str string    for scanner.Scan() {          fmt.Println(scanner.Text())     }我如何使用第一个值并添加它来打印该结果？124

Answer 1

您还必须使用strconv来转换数字

    scn := bufio.NewScanner(os.Stdin)

    scn.Scan()

    n1, err := strconv.Atoi(scn.Text())

    if err != nil {

        fmt.Printf("operation failed: %v\n", err)

        return

    }

    scn.Scan()

    n2, err := strconv.Atoi(scn.Text())

    if err != nil {

        fmt.Printf("operation failed: %v\n", err)

        return

    }

    fmt.Printf("%d + %d = %d\n", n1, n2, n1+n2)