How to find the length of the pointer in Golang? Last Updated : 05 Sep, 2019 Comments Improve Suggest changes Like Article Like Report Pointers in Go programming language or Golang is a variable which is used to store the memory address of another variable. Pointers in Golang are also termed as the special variables. The variables are used to store some data at a particular memory address in the system. The memory address is always found in hexadecimal format(starting with 0x like 0xFFAAF etc.). In pointers, you are allowed to find the length of the pointer with the help of len() function. This function is a built-in function returns the total number of elements present in the pointer to an array, even if the specified pointer is nil. This function is defined under builtin. Syntax: func len(l Type) int Here, the type of l is a pointer. Let us discuss this concept with the help of given examples: Example: C // Go program to illustrate how to find the // length of the pointer to an array package main import ( "fmt" ) // Main function func main() { // Creating and initializing // pointer to array // Using var keyword var ptr1 [6]*int var ptr2 [3]*string var ptr3 [4]*float64 // Finding the length of // the pointer to array // Using len function fmt.Println("Length of ptr1: ", len(ptr1)) fmt.Println("Length of ptr2: ", len(ptr2)) fmt.Println("Length of ptr3: ", len(ptr3)) } Output: Length of ptr1: 6 Length of ptr2: 3 Length of ptr3: 4 Example 2: C // Go program to illustrate how to find // the length of the pointer to an array package main import ( "fmt" ) // Main function func main() { // Creating an array arr := [6]int{200, 300, 400, 500, 600, 700} var x int // Creating pointer var p [4]*int // Assigning the address for x = 0; x < len(p); x++ { p[x] = &arr[x] } // Displaying result for x = 0; x < len(p); x++ { fmt.Printf("Value of p[%d] = %d\n", x, *p[x]) } // Finding length // Using len() function fmt.Println("Length of arr: ", len(arr)) fmt.Println("Length of p: ", len(p)) } Output: Value of p[0] = 200 Value of p[1] = 300 Value of p[2] = 400 Value of p[3] = 500 Length of arr: 6 Length of p: 4 Comment More infoAdvertise with us Next Article How to find the length of the pointer in Golang? A ankita_saini Follow Improve Article Tags : Go Language Golang-Pointers Golang Similar Reads How to find the capacity of the pointer in Golang? Pointers in Go programming language or Golang is a variable which is used to store the memory address of another variable. Pointers in Golang are also termed as the special variables. The variables are used to store some data at a particular memory address in the system. The memory address is always 2 min read How to Find Length of Struct in Golang? In programming, data structures are vital in organizing and storing data efficiently. One such data structure in Go, also known as Golang, is the struct. This article will delve into the concept of structure in Golang and explore various methods to find its length.Table of ContentWhat is Struct with 5 min read How to find the Length of Channel, Pointer, Slice, String and Map in Golang? In Golang, len function is used to find the length of a channel, pointer, slice, string, and map. Channel: In Go language, a channel is a medium through which a goroutine communicates with another goroutine and this communication is lock-free. C // Go program to illustrate // how to find the length 2 min read How to find the type of Struct in Golang? A structure or struct in Golang is a user-defined data type which is a composition of various data fields. Each data field has its own data type, which can be a built-in or another user-defined type. Struct represents any real-world entity that has some set of properties/fields. Go does not support 3 min read How to find the capacity of Channel, Pointer and Slice in Golang? Go language, capacity defines the maximum number of elements that a particular can hold. Here the task is to find the capacity of Channel, Pointer, and Slice in Golang, we can use the cap() function. Syntax: func cap(l Type) int Here, the type of l is a pointer. Let us discuss this concept with the 2 min read Like