Functions In Go Lang | Go Lang Examples

#JavaInspires

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 😀 Hi Guys,

Welcome to java inspires. 

In this post, we will see how to create and work with functions in go lang.

sample.go

//JavaInspires
package main

import "fmt"

func main() {
	// invoke simple function
	simpleFunction()
	// invoke function with parameters
	add(2, 3)
	//invoke function with return value
	ret := multiply(2, 3)
	fmt.Println("multiply return value :", ret)
	//invoke function with multiple return values
	add, sub := compute(2, 3)
	fmt.Println("add :", add)
	fmt.Println("sub :", sub)
	//invoke variadic function
	fmt.Println("sum(1,2,3) = ", sum(1, 2, 3))
	fmt.Println("sum(1,2,3,4) = ", sum(1, 2, 3, 4))

}

// lets create a simple function
func simpleFunction() {
	fmt.Println("Simple Function Called")
}

// create a function with parameters
func add(a, b int) {
	fmt.Println("a + b = ", a+b)
}

//function with return value
func multiply(a, b int) int {
	return a * b
}

// function with multiple return values
func compute(a, b int) (int, int) {
	return (a + b), (a - b)
}

//function with variable number of parameters
func sum(nums ...int) int {
	res := 0
	for _, n := range nums {
		res += n
	}
	return res
}

Output:

PS C:\Users\developer\Desktop> go run .\sample.go
Simple Function Called
a + b =  5
multiply return value : 6
add : 5
sub : -1
sum(1,2,3) =  6
sum(1,2,3,4) =  10       
PS C:\Users\developer\Desktop> 

THANK YOU

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#JavaInspires