Golang program to demonstrate pointer to an array as a function argument

Here, we are going to demonstrate pointer to an array as a function argument in Golang (Go Language).
Submitted by Nidhi, on March 14, 2021

Problem Solution:

In this program, we will create an array of integers and pointer to an array and access the elements of the array using the pointer.

Program/Source Code:

The source code to demonstrate a pointer to an array is given below. The given program is compiled and executed successfully.

// Golang program to demonstrate 
// pointer to an array as a function argument

package main
import "fmt"

func TestFun(ptr *[5]int){
    fmt.Println("Array elements: ")
    for i:=0; i<=4;i++{
        fmt.Printf("%d ",(*ptr)[i])
    }
}

func main() {
    arr:= [...]int{1,2,3,4,5}
    TestFun(&arr)
}

Output:

Array elements:
1 2 3 4 5

Explanation:

In the above program, we declare the package main. The main package is used to tell the Go language compiler that the package must be compiled and produced the executable file. Here, we imported the fmt package that includes the files of package fmt then we can use a function related to the fmt package.

func TestFun(ptr *[5]int){
    fmt.Println("Array elements: ")
    for i:=0; i<=4;i++{
        fmt.Printf("%d ",(*ptr)[i])
    }
}

In the above code, we created a function TestFun() that accepts a pointer to an array as an argument. Here, we printed the array elements using the pointer on the console screen.

In the main() function, we created called TestFun() and printed the array elements.

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