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{:.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.

• 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.