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Golang program to iterate map elements using the range

Here, we are going to learn how to iterate map elements using the range in Golang (Go Language)?
Submitted by Nidhi, on March 25, 2021 [Last updated : March 04, 2023]

How to iterate map elements using the range in Golang?

Problem Solution:

In this program, we will create a simple map to store country code using the make() function. Then we access and print elements of the map using the range.

Program/Source Code:

The source code to iterate map elements using range is given below. The given program is compiled and executed successfully.

Golang code to iterate map elements using the range

// Golang program to iterate map elements
// using the range

package main

import "fmt"

func main() {
	var CountryCode = make(map[string]int)

	CountryCode["ind"] = 101
	CountryCode["aus"] = 102
	CountryCode["eng"] = 103
	CountryCode["pak"] = 104
	CountryCode["usa"] = 105

	fmt.Printf("\nMap elements: ")
	for Key, Value := range CountryCode {
		fmt.Printf("\n%s : %d", Key, Value)
	}
}

Output:

Map elements:
pak : 104
usa : 105
ind : 101
aus : 102
eng : 103

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 to formatting related functions.

In the main() function, we created a CountryCode map using make() function to store country code of specified country. Then we iterate map elements using range and print the KEY and VALUE of map elements on the console screen.

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