file_Scanner.go

package main

import (
    "bufio"
    "fmt"
    "os"
)

func main() {
    file, err := os.Open("file_Scanner.go")
    defer file.Close()
    if err != nil {
        panic(err)
    }

    sc := bufio.NewScanner(file)
    for i := 0; sc.Scan(); i++ {
        fmt.Println(i, sc.Text())
    }
}