Syntax Quiz - Languages Golang

Free practice quiz: Syntax (Languages Golang). 49 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

This Languages Golang practice quiz has 49 multiple-choice questions on Syntax, and 49 of them come with an explanation. Try the 5 sample questions below (tap an option to check yourself), then play the full quiz online. No sign-up needed.

Sample questions

1. Which keyword is used to declare a variable in Go?

   1. var
   2. let
   3. const
   4. declare
   Show answer

   Answer: A. var

   In Go, the `var` keyword is used to declare variables. For example: `var message string = "Hello, World!"`

2. Which Go construct is used for conditional execution based on a boolean expression?

   1. if statement
   2. switch statement
   3. for loop
   4. while loop
   Show answer

   Answer: A. if statement

   The `if` statement is used for conditional execution in Go. It evaluates a boolean expression and executes a block of code if the expression is true.

3. What is the keyword used to import packages in Go?

   1. import
   2. include
   3. require
   4. use
   Show answer

   Answer: A. import

   The `import` keyword is used to bring code from other packages into your current package.

4. What is the Go keyword for creating a new channel?

   1. make
   2. new
   3. channel
   4. create
   Show answer

   Answer: A. make

   Channels are created using the built-in `make` function. Example: `myChannel := make(chan int)`.

5. What is the purpose of the `defer` keyword in Go?

   1. To schedule a function call to run just before the enclosing function returns
   2. To define a function that runs immediately
   3. To create a loop
   4. To declare a variable
   Show answer

   Answer: A. To schedule a function call to run just before the enclosing function returns

   The `defer` statement defers the execution of a function call until the function returns. Deferred calls are executed in LIFO (Last-In, First-Out) order.

More questions in this quiz

Answers and explanations are in the full quiz.

1. What is the correct syntax for a single-line comment in Go?
2. What is the keyword used to define a function in Go?
3. Which operator is used for addition in Go?
4. What is the zero value for an integer type in Go?
5. What is the Go keyword for defining a constant?
6. What is the correct syntax for a multi-line comment in Go?
7. Which keyword is used to return a value from a function in Go?
8. What is the zero value for a boolean type in Go?
9. What is the Go keyword for loop that iterates over a range (like elements of a slice or array)?
10. Which keyword is used to define a structure in Go?
11. What does the `:=` operator do in Go?
12. What is the Go keyword for creating a new goroutine?
13. Which of the following is a valid Go identifier?
14. What is the zero value for a string type in Go?
15. Which keyword is used to switch between different cases in Go?
16. What is the Go keyword for defining a package?
17. Which operator is used for assignment in Go?
18. What is the zero value for a pointer type in Go?
19. Which loop structure in Go executes indefinitely until a condition is met or a `break` statement is encountered?
20. What is the Go keyword used to create a new map?
21. Which keyword is used to define a type alias in Go?
22. What is the Go keyword used to iterate over a string, yielding runes?
23. Which operator is used for division in Go?
24. What is the Go keyword for implementing an interface?
25. What is the zero value for a slice type in Go?
26. Which Go statement is used to skip the rest of the current iteration of a loop and continue to the next iteration?
27. What is the correct syntax for accessing a field of a Go struct?
28. Which type of statement allows executing different code blocks based on the value of an expression?
29. What is the zero value for a map type in Go?
30. Which keyword is used to terminate a loop or a `switch` statement immediately in Go?
31. What is the Go keyword for defining an interface?
32. Which operator is used for modulo (remainder) in Go?
33. What is the Go keyword used to send a value on a channel?
34. What is the correct syntax for receiving a value from a channel in Go?
35. Which keyword is used to define an enumerated type (though Go doesn't have explicit enums, this is the closest concept)?
36. Which Go keyword is used for type assertion?
37. What is the Go keyword used to ensure that a specific block of code executes regardless of whether an error occurs or not, often used with `defer`?
38. Which of the following correctly defines a two-dimensional array of integers in Go?
39. What is the purpose of the `iota` identifier in Go?
40. Which Go keyword is used to explicitly signal an error or a panic condition?
41. What is the correct syntax to declare a function that returns multiple values in Go?
42. Which of the following is NOT a valid way to declare a string variable in Go?
43. What is the Go keyword for creating a function that can be called concurrently as a separate thread of execution?
44. Which operator is used for bitwise XOR in Go?

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