goroutines.go

package main

import (
   "fmt"
   "sync"
)

func main() {
   ConcurrentFunctions(func1, func2, func3, func4)
}

func ConcurrentFunctions(fns ...func()) {
   var wg sync.WaitGroup
   for _, fn := range fns {
      wg.Add(1)
      go func(f func()) {
         f()
         wg.Done()
      }(fn)
   }

   wg.Wait()
}

func func1() {
   fmt.Println("I am function func1")
}

func func2() {
   fmt.Println("I am function func2")
}

func func3() {
   fmt.Println("I am function func3")
}

func func4() {
   fmt.Println("I am function func4")
}