The **`fmt.Println`** function in the GO programming language is a function used to print out a formatted `string` to the console. `fmt.Println` does not support custom format specifiers, which means only the default formats are used to format the `string`. `fmt.Println` also appends a newline character at the end of the string.

Here `Println` is the actual function, while `fmt` is the GO package that stores the definition of this function. So, to use this function, you must import the `fmt` package in your file and access the `Println` function within using the `.` notation: `fmt.Println` 

# Function definition

The definition of the `Println` function inside the `fmt` package is as follows:



# Parameters
`fmt.Println` takes a variable number of arguments. In the function definition above, `a ...interface{}` refers to the list of all arguments that need to be formatted and printed.

# Return values

The `fmt.Println` function can return two things:

* `count`: The number of bytes that were written to the standard output.

* `err`: Any error thrown during the execution of the function.

# Example
The following example helps as a simple program where we print out a single `string` along with an integer value:



package main

import (
	"fmt"
)

func main() {
  // declaring variables of different datatypes
  var message string = "Hello and welcome to"
  var year int = 2021

	// printing out the declared variables as a single string
	fmt.Println(message, year)

}

The following example shows us the effects of the new line character `fmt.Println` appends to the final string. All the subsequent strings printed after the first one is on a different line:

package main

import (
	"fmt"
)

func main() {

  // declaring variables of different datatypes
  var message string = "Hello and welcome to"
  var year int = 2021

  // printing out the same message 3 time without 
  // explicitly using the newline character
	fmt.Println(message, year)
 	fmt.Println(message, year)
  fmt.Println(message, year)


}

This example shows you how you can use the return values from the `fmt.Println` function:

package main

import (
	"fmt"
)

func main() {

    // declaring variables of different datatypes
	var message string = "Hello and welcome to Educative"
	
	// storing the return values of Println
	char_count, error := fmt.Println(message)

	if error == nil  {
		fmt.Print("Println executed without errors and wrote ",char_count, " characters")
	}

}



What is fmt.Println in Golang?

Prints formatted strings to the console, appends newline, uses default formats, returns byte count and any error.