Naming the Return Values of a Function in Golang Last Updated : 10 May, 2020 Comments Improve Suggest changes Like Article Like Report A return value helps to retain the final output of the function after it performs the instructions given in its body. Functions in Golang exhibit variety in return values and rely on the programmer to decide whether to name them or not. Golang introduces a concept of "Naked Return" allowing the use of return keyword without explicitly stating the return values in the function body provided that the return values are declared in the function header. However, the variable name must be the same as the one defined in the function header. C package main import "fmt" // This function returns a string message by taking a parameter // "name" of string type. The Naked return concept is being // displayed here since the return statement not specify the return // of message variable. The returning of the message variable // has already being defined func greeting(name string) (message string) { // Since the variable is already // defined in function variable // there is no need to declare it // again in the function body // using " := " operator. // The name "message" must be same as // the one declared in the function header. message = "Hello, " + name // This statement returns message variable // without explicitly stating its name return } // Driver code func main() { // The return value of greeting // function is stored in msg variable msg := greeting("GFG") // Printing output fmt.Println(msg) } Output: Hello, GFG Also, the function can return a variable without specifying its name in the function header but only its datatype. C package main import "fmt" // This function returns a string datatype // Since the return variable is not // defined in the function header, // There is an explicit need to specify // the variable to return func greeting(name string) string { message := "Hello, " + name return message } // Driver code func main() { msg := greeting("GFG") fmt.Println(msg) } Output: Hello, GFG A function can also return multiple values and receive multiple parameters. However, to work with a function that returns multiple values, the number of variables that the function returns must be equal to the number of variables that hold the return values when the function execution finishes. C package main import "fmt" // The below function returns four // variables after performing operations // on the two parameters that were passed to it func operations(a, b int) (sum, diff, prod, div int) { // The four variables to be returned are defined here sum, diff, prod, div = a+b, a-b, a*b, a/b // returning the above-defined four variables. return } // Driver code func main() { a, b := 5, 3 // Since the function returns four values, // Four receiver variables must be used. sum, diff, prod, div := operations(a, b) fmt.Println(sum, diff, prod, div) } Output: 8 2 15 1 Comment More infoAdvertise with us Next Article Naming the Return Values of a Function in Golang T TanmayThaakur Follow Improve Article Tags : Go Language Similar Reads Golang Program that Uses Named Return Values and Defaults Golang functions have special functionality that allows them to provide the name to the return values. These named return values can be used as arguments or variables. The named return values also use the default values for the data types like 0 for int type etc. To understand this concept let's tak 1 min read Function Returning Multiple Values in Go Language In Go language, you are allowed to return multiple values from a function, using the return statement. Or in other words, in function, a single return statement can return multiple values. The type of the return values is similar to the type of the parameter defined in the parameter list. Syntax: fu 3 min read How to Find the Sin and Cos Value of a Number in Golang? Go language provides inbuilt support for basic constants and mathematical functions to perform operations on the numbers with the help of the math package. You can find the value of sin and cos of the specified number with the help of Sincos() function provided by the math package. So, you need to a 2 min read main and init function in Golang The Go language reserve two functions for special purpose and the functions are main() and init() function.main() functionIn Go language, the main package is a special package which is used with the programs that are executable and this package contains main() function. The main() function is a spec 2 min read reflect.Int() Function in Golang with Examples Go language provides inbuilt support implementation of run-time reflection and allowing a program to manipulate objects with arbitrary types with the help of reflect package. The reflect.Int() Function in Golang is used to get the v's underlying value, as an int64. To access this function, one needs 1 min read Like