Go Language Fundamentals

Test your knowledge of Go syntax,variables,and control structures.

1. What is the file extension for Go source code files?

.go .golang .g

2. Which function serves as the entry point of a Go program?

init() main() start()

3. Which operator is used for short variable declaration in Go?

= := var

4. What is the zero value for an uninitialized int variable in Go?

0 nil undefined

5. How is a package imported in Go?

include "fmt" import "fmt" using "fmt"

6. What does the 'go' keyword do when preceding a function call?

Defines a new function Starts a goroutine Exits the program

7. Which built-in type represents an immutable sequence of bytes in Go?

bytearray str string

8. What is the result of 7 / 3 in Go (integer division)?

2 2.333 0

9. Which keyword declares a constant in Go?

const constant let

10. What is the purpose of the 'defer' statement?

Delays execution until the surrounding function exits Defers error handling to the caller Declares a variable for later use

11. Which of the following are basic (primitive) types in Go? (Select all that apply)

int string []int (slice) map[string]int

12. Which statements about Go interfaces are true? (Select all that apply)

Explicitly implemented with 'implements' keyword Implicitly implemented by type methods Contain method signatures only Include variable declarations

13. Which are valid error handling practices in Go? (Select all that apply)

Return error as last return value Using try/catch blocks Checking errors with 'if err != nil' Using panic and recover

14. What are features of Go's concurrency model? (Select all that apply)

Uses goroutines (lightweight threads) Directly uses OS-level threads Communicates via channels Relies on shared memory by default

15. Go supports object-oriented programming with classes and inheritance.

True False

16. Goroutines are managed by the Go runtime, not the operating system kernel.

True False

17. A Go function can return multiple values.

True False

18. What is the abbreviation for Go's official dependency management tool?

19. What keyword is used to exit a loop prematurely in Go?

20. Name the built-in function in Go that prints to standard output without appending a newline (not part of the fmt package).

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