package main import ( "fmt" "io/ioutil" "log" "os" "strings" ) type numberSpoken struct { number int rounds []int } func readFile(filePath string) []numberSpoken { content, err := ioutil.ReadFile(filePath) if err != nil { log.Fatal(err) } var numbersSpoken []numberSpoken for i, item := range strings.Split(string(content), ",") { var number int n, err := fmt.Sscanf(item, "%d", &number) if err != nil || n < 1 { log.Fatal(err) } numbersSpoken = append(numbersSpoken, numberSpoken{number: number, rounds: []int{i + 1}}) } return numbersSpoken } func main() { if len(os.Args) < 2 { log.Fatal("You need to specify a file!") } numbersSpoken := readFile(os.Args[1]) fmt.Println(numbersSpoken) }