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Golang Passing Address to a Function

Passing the address of variable to the function and the value of a variables modified using dereferencing inside body of function.

Example

package main

import "fmt"

func update(a *int, t *string) {
	*a = *a + 5      // defrencing pointer address
	*t = *t + " Doe" // defrencing pointer address
	return
}

func main() {
	var age = 20
	var text = "John"
	fmt.Println("Before:", text, age)

	update(&age, &text)

	fmt.Println("After :", text, age)
}

Output

Before: John 20
After : John Doe 25
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