// FizzBuzz implentation in Go
package main

import (
	"fmt"
	"os"
	"strconv"
)

func main() {
	// Get argument for noOfLines and convert to integer
	if len(os.Args) != 2 {
		fmt.Println("Usage: ./fizzBuzz <no. of lines>")
		fmt.Println("If a non-integer is passed, behaviour may be unexpected.")
		os.Exit(1)
	}
	noOfLinesArg, _ := strconv.Atoi(os.Args[1])

	doFizzBuzz(noOfLinesArg)
}

func doFizzBuzz(noOfLines int) {
	for i := 1; i < noOfLines+1; i++ {
		switch {
		case i%3 == 0 && i%5 == 0:
			fmt.Println("FizzBuzz")
		case i%3 == 0:
			fmt.Println("Fizz")
		case i%5 == 0:
			fmt.Println("Buzz")
		default:
			fmt.Printf("%d\n", i)
		}
		i++
	}
}