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Golang fmt.Sprintln() Function with Examples

Golang | fmt.Sprintln() Function: Here, we are going to learn about the Sprintln() function of the fmt package with its usages, syntax, and examples.
Submitted by IncludeHelp, on October 10, 2021

fmt.Sprintln()

In Go language, the fmt package implements formatted I/O with functions analogous to C's printf() and scanf(). The Sprintln() function is an inbuilt function of the fmt package which is used to format using the default formats for its operands and returns the resulting string. Spaces are always added between operands and a newline is appended.

It accepts one parameter (a ...interface{}) and returns the formatted string.

Syntax:

func Sprintln(a ...interface{}) string

Parameter(s):

• a : A custom type that is used to specify a set of one or more method signatures, here we can provide a set of the variables, constants, functions, etc.

Return Value:

The return type of the fmt.Sprintln() function is a string, it returns the formatted string.

Example 1:

// Golang program to demonstrate the
// example of fmt.Sprintln() function

package main

import (
	"fmt"
)

func main() {
	name := "Alex"
	age := 21

	// Calling fmt.Sprintln() to format the string
	s := fmt.Sprintln(name, " is ", age, " years old.")

	// Prints the formatted string
	fmt.Println("s:", s)

	name = "Alvin Alexander"
	age = 43

	// Calling fmt.Sprintln() to format the string
	s = fmt.Sprintln(name, " is ", age, " years old.")

	// Prints the formatted string
	fmt.Println("s:", s)
}

Output:

s: Alex  is  21  years old.

s: Alvin Alexander  is  43  years old.

Example 2:

// Golang program to demonstrate the
// example of fmt.Sprintln() function

package main

import (
	"fmt"
)

func main() {
	x := 10
	y := 20

	// Calling fmt.Sprintln() to format the string
	s1 := fmt.Sprintln(x, " + ", y, " = ", x+y)
	s2 := fmt.Sprintln(x, " - ", y, " = ", x-y)
	s3 := fmt.Sprintln(x, " * ", y, " = ", x*y)

	// Prints the formatted string
	fmt.Println("Addition:", s1)
	fmt.Println("Subtraction:", s2)
	fmt.Println("Multiplication:", s3)
}

Output:

Addition: 10  +  20  =  30

Subtraction: 10  -  20  =  -10

Multiplication: 10  *  20  =  200

Golang fmt Package »

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