package main import ( "bufio" "fmt" "log" "os" ) func readInput(file *os.File) [][]byte { scanner := bufio.NewScanner(file) var platform [][]byte for scanner.Scan() { line := scanner.Text() if line == "" { break } var row []byte for i := range line { row = append(row, line[i]) } platform = append(platform, row) } return platform } func main() { if len(os.Args) < 2 { log.Fatal("You need to specify a file!") } filePath := os.Args[1] file, err := os.Open(filePath) if err != nil { log.Fatalf("Failed to open %s!\n", filePath) } platform := readInput(file) fmt.Println(platform) }