GO Structs and Methods

Question 1

How do you define a method on a struct type `Point` in Go?

Accepted Answer

func (p Point) Method() {}

Answer

func Point.Method() {}

Answer

func Method(Point p) {}

Answer

Point.func Method() {}

Question 2

Which statement correctly initializes a struct `Person{Name string; Age int}` with named fields?

Accepted Answer

Person{Name: "Alice", Age: 30}

Answer

Person("Alice", 30)

Answer

new Person{"Alice", 30}

Answer

Person[Name="Alice", Age=30]

Question 3

What is the difference between a value receiver and a pointer receiver in a Go method?

Accepted Answer

A pointer receiver can modify the original struct; a value receiver operates on a copy

Answer

A value receiver is faster in all cases; a pointer receiver is always slower

Answer

Pointer receivers cannot be used with structs that implement interfaces

Answer

There is no functional difference; both operate on the same data

Question 4

In Go, can a struct embed another struct? What is this feature called?

Accepted Answer

Yes, it is called struct embedding and promotes the embedded fields and methods

Answer

No, Go does not support any form of struct composition

Answer

Yes, but only if both structs are in the same package

Answer

Yes, but embedded structs must be interfaces, not concrete types

Question 5

What does the following code print?
```go
type Rect struct{ W, H int }
func (r Rect) Area() int { return r.W * r.H }
fmt.Println(Rect{3, 4}.Area())
```

Accepted Answer

12

Answer

7

Answer

34

Answer

Compilation error

Question 6

Which Go construct allows you to create an anonymous struct inline?

Accepted Answer

struct{ Field Type }{value}

Answer

anonymous{ Field Type }

Answer

inline struct(Field Type)

Answer

var s = struct(Field string)

Question 7

What keyword is used to access the zero value of a struct in Go when no initialization is provided?

Accepted Answer

No keyword needed; uninitialized structs automatically have zero values for all fields

Answer

nil

Answer

zero

Answer

default