Your First Program in Go Programming Language Tutorial Online

Go (a.k.a GoLang) is an open-source programming language that makes it easy to build simple, reliable, and efficient software. Go is gaining popularity, because of easy to use, concurrency mechanisms that get the most out of multicore and networked machines, Garbage collection, modular and flexible program structure, and more.

If you have worked in C++ you will able to understand the syntax of Go. Some new ways to use for loop and did I mentioned that you can return 2 variables from a function instead of 1. It also uses pointers.

As I have worked with GoLang and made APIs, it was quite easy and code was concise. If you want me to make videos more Go Programming Language Tutorial, comment below.

Install Go on your system

1. Download SDK from this link acc. to your OS.
2. Set your environment variable up to <path>/Go/bin/, this path will be called as GOROOT
3. Now the next steps are important, you need to create 1 more environment variables GOPATH
4. Create a new folder in your desired location lets say, ~/Go, this path you will set as GOPATH, in this GOPATH you will make another folder with a name src ,
5. Again make a folder in this srcwith a domain name as I have made navoki.com as a folder name, this folder will contain all your projects. Now within this Go folder, you will install all dependencies, Go will make folder here. These steps are necessary.
6. You are ready to work with GO
7. Now create main.go file in navoki.com write this code

package main
import "fmt"

func main() {
	fmt.Println("Hello, World!")
}

7. open Command Prompt window here and type

C:\Users\TheDoctor\go\src\goprojects\hello>go run main.go
Hello, World!

And the output is printed.

Explanation

1. package main is a package declaration, every program should begin with this. Packages are Go’s way of organizing and reusing code
2. import "fmt" , Package fmtimplements formatted I/O with functions analogous to C’s printfand scanf.
3. main() is the starting point of your program.
4. fmt.Println("Hello, World!"), obviously prints the data on the terminal
5. and you don’t need ; in go

Now you can experiment with other coding blocks like for loop,if-else, Lists, etc. if you need any tutorial for basic co basic core Go or APIs with GO, let me know in the comments below.