Struct usage patterns in Go - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to declare a struct named Person.

Go

type Person [1] {
    Name string
    Age  int
}

Drag options to blanks, or click blank then click option'

Astruct

Bclass

Cinterface

Dpackage

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'class' instead of 'struct' which is not valid in Go.

Using 'interface' which defines behavior, not data structure.

In Go, structs are declared using the keyword struct.

2fill in blank

medium

Complete the code to create a new Person instance with Name "Alice" and Age 30.

Go

p := [1] Person{Name: "Alice", Age: 30}

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Anew

B*

C&

Dvar

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'new' without assigning fields causes zero values.

Using '*' is for dereferencing, not creating.

Using & before a struct literal returns a pointer to the new struct.

3fill in blank

hard

Fix the error in the method receiver syntax to correctly define a method for Person.

Go

func (p [1] Person) Greet() string {
    return "Hello, " + p.Name
}

Drag options to blanks, or click blank then click option'

Afunc

B&

Cvar

D*

Attempts:

3 left

💡 Hint

Common Mistakes

Using '&' which is invalid syntax in method receivers.

Using 'var' or 'func' which are keywords, not receiver types.

Methods with pointer receivers use * before the type name.

4fill in blank

hard

Fill both blanks to create a map from string to Person struct and add an entry.

Go

people := make(map[1]Person)
people["bob"] = [2]{Name: "Bob", Age: 25}

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A[string]

BPerson

Cstruct

Dmap

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'map' inside make's type brackets which is incorrect.

Using 'Person' instead of 'struct' for the literal when type is not declared.

The map key type is [string] and the value is a struct literal struct.

5fill in blank

hard

Fill all three blanks to define an anonymous struct, assign values, and print the Name field.

Go

user := [1] {
    Name: "Eve",
    Age:  28,
}
fmt.Println(user.[2])

var info [3] = user

Drag options to blanks, or click blank then click option'

Astruct

BName

Cstruct { Name string; Age int }

DPerson

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'Person' type when anonymous struct is expected.

Trying to access a field not declared in the struct.

An anonymous struct is declared with struct { ... }. Access the Name field and assign the same struct type to info.