{"id":120020,"date":"2023-04-14T18:31:51","date_gmt":"2023-04-14T13:01:51","guid":{"rendered":"https:\/\/www.vskills.in\/certification\/tutorial\/?page_id=120020"},"modified":"2024-04-12T14:32:32","modified_gmt":"2024-04-12T09:02:32","slug":"array-types-in-golang","status":"publish","type":"page","link":"https:\/\/www.vskills.in\/certification\/tutorial\/array-types-in-golang\/","title":{"rendered":"Array types in Golang"},"content":{"rendered":"\n

Arrays are a collection of elements of the same type. They are used to store a fixed-size sequence of elements, and each element can be accessed using its index. In Golang, arrays are declared using the following syntax:<\/p>\n\n\n\n

var arr [size]datatype<\/p>\n\n\n\n

Here, size is the number of elements in the array, and datatype is the type of the elements. For example, to declare an array of 5 integers, you can write:<\/p>\n\n\n\n

var numbers [5]int<\/p>\n\n\n\n

You can also initialize the values of an array during declaration, like this:<\/p>\n\n\n\n

var days = [7]string{“Monday”, “Tuesday”, “Wednesday”, “Thursday”, “Friday”, “Saturday”, “Sunday”}<\/p>\n\n\n\n

In this example, an array of 7 strings is declared and initialized with the names of the days of the week.<\/p>\n\n\n\n

To access the elements of an array, you can use their index. The index of the first element is 0, and the index of the last element is size-1. For example, to print the second element of the numbers array declared earlier, you can write:<\/p>\n\n\n\n

fmt.Println(numbers[1])<\/p>\n\n\n\n

Practice Questions on array types in Golang<\/strong><\/h3>\n\n\n\n

Here are some practice questions on array types in Golang:<\/p>\n\n\n\n

What is the syntax for declaring an array of 10 integers in Golang?<\/strong><\/p>\n\n\n\n

A. var arr [10]int
B. var arr = [10]int{}
C. var arr []int = make([]int, 10)
D. var arr [int]10<\/p>\n\n\n\n

Answer: A<\/p>\n\n\n\n

What is the index of the last element in an array of size 8?<\/strong><\/p>\n\n\n\n

A. 7
B. 8
C. 9
D. 10<\/p>\n\n\n\n

Answer: A<\/p>\n\n\n\n

What is the output of the following Go code?<\/strong><\/p>\n\n\n\n

package main<\/p>\n\n\n\n

import “fmt”<\/p>\n\n\n\n

func main() {
var nums = [3]int{1, 2, 3}<\/p>\n\n\n\n

for i := 0; i < len(nums); i++ {
fmt.Println(nums[i])
}
}<\/p>\n\n\n\n

A. 1 2 3
B. 1
C. 2
D. 3<\/p>\n\n\n\n

Answer: A<\/p>\n\n\n\n

What is the syntax for initializing the first element of an array to 10?<\/strong><\/p>\n\n\n\n

A. var arr [1]int = {10}
B. var arr = [1]int{10}
C. var arr []int = make([]int, 1); arr[0] = 10
D. var arr [10]int; arr[0] = 10<\/p>\n\n\n\n

Answer: B<\/p>\n\n\n\n

What is the output of the following Go code?<\/strong><\/p>\n\n\n\n

package main<\/p>\n\n\n\n

import “fmt”<\/p>\n\n\n\n

func main() {
var arr = [5]string{“a”, “b”, “c”, “d”, “e”}<\/p>\n\n\n\n

fmt.Println(arr[2])
fmt.Println(len(arr))
}<\/p>\n\n\n\n

A. c 5
B. b 4
C. c 4
D. d 5<\/p>\n\n\n\n

Answer: A<\/p>\n","protected":false},"excerpt":{"rendered":"

Arrays are a collection of elements of the same type. They are used to store a fixed-size sequence of elements, and each element can be accessed using its index. In Golang, arrays are declared using the following syntax: var arr [size]datatype Here, size is the number of elements in the array, and datatype is the…<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"categories":[],"tags":[],"class_list":["post-120020","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"\nArray types in Golang - Tutorial<\/title>\n<meta name=\"description\" content=\"What is Array types in Golang? 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