Random test code to figure out concurrency on Go language

gotest.go

package main

import (
	"fmt" 
	"time"
)

func main() {
	c1 := make(chan bool)
	go func() {
		for i := 0; i < 10; i++ {
			fmt.Printf(fmt.Sprintf("First: %d\n",i))
			time.Sleep(1000000000)
		}
		c1 <- true;
		fmt.Println("First is complete")
	} ()
	
	c2 := make(chan bool)
	go func() {
		for i := 0; i < 10; i++ {
			fmt.Printf(fmt.Sprintf("Second: %d\n",i))
			time.Sleep(2000000000)
		}
		c2 <- true;
		fmt.Println("Second is complete")
	} ()
	
	fmt.Println("Waiting for functions to complete")
	<-c1 
	<-c2
	
	fmt.Println("Done")
}
	
/*
Output:
Waiting for functions to complete
First: 0
Second: 0
First: 1
Second: 1
First: 2
First: 3
Second: 2
First: 4
First: 5
Second: 3
First: 6
First: 7
Second: 4
First: 8
First: 9
Second: 5
First is complete
Second: 6
Second: 7
Second: 8
Second: 9
Second is complete
Done
*/