Three versions

fizzbuzz.go

package main

import "fmt"

func main() {
	for i := 1; i <= 100; i++ {
		if i%15 == 0 {
			fmt.Println("FizzBuzz")
		} else if i%3 == 0 {
			fmt.Println("Fizz")
		} else if i%5 == 0 {
			fmt.Println("Buzz")
		} else {
			fmt.Println(i)
		}
	}
}

// Refactored Version
func main() {
	for i := 1; i <= 100; i++ {
		result := ""

		if i%3 == 0 { result += "Fizz" }
		if i%5 == 0 { result += "Buzz" }

		if result != "" {
			fmt.Println(result)
			continue
		}

		fmt.Println(i)
	}
}

// goRoutine
func main() {
	for out := range FizzBuzz(100) {
		fmt.Println(out)
	}
}

func FizzBuzz(amount int) <-chan string {
	out := make(chan string, amount)

	go func() {
		for i := 1; i <= amount; i++ {
			result := ""

			if i%3 == 0 { result += "Fizz" }
			if i%5 == 0 { result += "Buzz" }
			if result == "" { result = fmt.Sprintf("%v", i) }
			out <- result
		}
		close(out)
	}()

	return out
}