How to print struct variables data in Golang?

Last Updated : 22 Jun, 2020

A struct (Structure) is a user-defined type in Golang that contains a collection of named fields/properties which creates own data types by combining one or more types. Also, this concept is generally compared with the classes in object-oriented programming. A struct has different fields of the same or different data types and is declared by composing a fixed set of unique fields. Syntax:

type StructName struct {
    field1 fieldType1
    field2 fieldType2
}

struct variables:

variable_name := structure_variable_type {value1, value2...valuen}

There are two ways to print Struct Variables in Golang. The first way is to use the Printf function of package fmt with special tags in the arguments the printing format arguments. Some of those arguments are as below:

%v the value in a default format
%+v the plus flag adds field names
%#v a Go-syntax representation of the value

Example 1:

// Go program to print struct variables data
package main

import (
    "fmt"
)

// Creating a structure
type Employee struct {
    Name   string
    Age    int
    Salary int
}

// Main function
func main() {
    // Creating variables
    // of Employee structure
    var e Employee
    e.Name = "Simran"
    e.Age = 23
    e.Salary = 30000

    // Print variable name, value and type
    fmt.Printf("%s\n", e.Name)
    fmt.Printf("%d\n", e.Age)
    fmt.Printf("%d\n", e.Salary)
    fmt.Printf("%#v\n", e)
}

Output:

Simran
23
30000
main.Employee{Name:"Simran", Age:23, Salary:30000}

Example 2: