package main import ( "bufio" "fmt" "log" "os" "strconv" "strings" ) func readInput(file *os.File) [][]int { scanner := bufio.NewScanner(file) var reports [][]int for scanner.Scan() { line := scanner.Text() if line == "" { break } var report []int numbers := strings.Split(line, " ") for _, number := range numbers { level, err := strconv.Atoi(number) if err != nil { log.Fatalf("Problem parsing input: %s", err) } report = append(report, level) } reports = append(reports, report) } return reports } 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) } reports := readInput(file) fmt.Println(reports) }