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Golang program to create and modify created slice

Here, we are going to learn how to create and modify created slice in Golang (Go Language)?
Submitted by Nidhi, on March 15, 2021 [Last updated : March 04, 2023]

How to create and modify created slice in Golang?

Problem Solution:

In this program, we will create a slice from an array of integers and then modify the value in created slice and print the slice on the console screen.

Program/Source Code:

The source code to create and modify created slice is given below. The given program is compiled and executed successfully.

Golang code to create and modify created slice

// Golang program to create and modify created slice

package main

import "fmt"

func main() {
	//Create an integer array
	arr := [10]int{10, 20, 30, 40, 50, 60, 70, 80, 90, 100}

	//create slice of from index 2 till index 4(5-1).
	intSlice := arr[2:5]

	intSlice[1] = 500
	fmt.Println("Slice elements: ")
	for _, ele := range intSlice {
		fmt.Printf("%d ", ele)
	}
}

Output:

Slice elements:
30 500 50

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.

In the main() function, we created an array of integers with 10 elements and then create the slice from the array. After that, we assigned the value 500 at index 1 in slice and printed the slice elements using a range in the "for" loop without index using "_" on the console screen.

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