# Lets Start With First Hello world Program


## Lets Start With First Hello world Program 

```

package main

// main package declaration
import "fmt"

// import librares
func main() {
	// declare main function with func keyforword followed by main()
	fmt.Println("Hello World")
	// fmt is fromat
}

// output :- hello_world


```
[Run](https://play.golang.org/p/b5LpJFoesBI){:.button.button--outline-success.button--pill}





- A complete program is created by linking a single, unimported package called the main package with all the packages it imports, transitively. The main package must have package name main and declare a function main that takes no arguments and returns no value.

    func main() { … }

- Program execution begins by initializing the main package and then invoking the function main. When that function invocation returns, the program exits. It does not wait for other (non-main) goroutines to complete.

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- Go: Meaning of the 'fmt' package acronym
- fmt is short for format. 
-  Package fmt implements formatted I/O with functions analogous to C's printf and scanf. The format 'verbs' are derived from    C's but are simpler.
 
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