I'm looking for the Go equivalent of scanf(). I tried with following code:

  1 package main
  2 
  3 import (
  4     "scanner"
  5     "os"
  6     "fmt"
  7 )
  8 
  9 func main() {
 10     var s scanner.Scanner
 11     s.Init(os.Stdin)
 12     s.Mode = scanner.ScanInts
 13     tok := s.Scan()
 14     for tok != scanner.EOF {
 15         fmt.Printf("%d ", tok)
 16         tok = s.Scan()
 17     }
 18     fmt.Println()
 19 }

I run it with input from a text with a line of integers. But it always output -3 -3 ...

And how to scan a line composed of a string and some integers? Changing the mode whenever encounter a new data type?

The Package documentation:

Package scanner

A general-purpose scanner for UTF-8 encoded text.

But it seems that the scanner is not for general use.

Updated code:

func main() {
    n := scanf()
    fmt.Println(n)
    fmt.Println(len(n))
}

func scanf() []int {
    nums := new(vector.IntVector)
    reader := bufio.NewReader(os.Stdin)
    str, err := reader.ReadString('\n')
    for err != os.EOF {
        fields := strings.Fields(str)
        for _, f := range fields {
            i, _ := strconv.Atoi(f)
            nums.Push(i)
        }   
        str, err = reader.ReadString('\n')
    }   
    r := make([]int, nums.Len())
    for i := 0; i < nums.Len(); i++ {
        r[i] = nums.At(i)
    }   
    return r
}