MCQs on Syntax and Basics | Go
Go is a powerful and efficient language, known for its simplicity and speed. In this guide, we’ll dive into its fundamental syntax, covering the program structure, variables, constants, data types, and basic I/O operations.
Chapter 2: Syntax and Basics – MCQs
1. Go Program Structure
- What is the first statement in a Go program?
- a)
import - b)
func main() - c)
package main - d)
package
- a)
- What is the purpose of the
mainfunction in Go?- a) It defines the entry point for the program
- b) It handles errors in the program
- c) It imports necessary packages
- d) It defines the variables for the program
- Which of the following is required in every Go program?
- a)
func - b)
package main - c)
import - d)
mainfunction
- a)
- How are Go packages imported?
- a)
import "packageName" - b)
import("packageName") - c)
import packageName; - d)
include "packageName"
- a)
- What is the significance of the
package maindeclaration in Go?- a) It indicates that the program is part of a library
- b) It indicates that the program is the entry point
- c) It is used to include third-party packages
- d) It is used to define the variables
- Where must the
mainfunction be located in a Go program?- a) At the beginning of the program
- b) After the imports section
- c) At the end of the program
- d) It can be placed anywhere in the program
- How are comments written in Go?
- a)
// This is a comment - b)
# This is a comment - c)
/* This is a comment */ - d)
! This is a comment
- a)
- What is the file extension for Go source code files?
- a)
.g - b)
.go - c)
.golang - d)
.goc
- a)
- Which of the following is true about Go code formatting?
- a) Go code must be manually indented using spaces
- b) Go uses the
gofmttool to automatically format code - c) Indentation in Go does not matter
- d) Go code must be written in all uppercase
- How do you declare a new package in Go?
- a)
new package MyPackage - b)
package MyPackage - c)
define package MyPackage - d)
declare package MyPackage
- a)
2. Variables, Constants, and Data Types
- How do you declare a variable in Go?
- a)
var x int - b)
let x int - c)
variable x int - d)
const x int
- a)
- What keyword is used to declare constants in Go?
- a)
const - b)
final - c)
static - d)
immutable
- a)
- Which of the following is a valid data type in Go?
- a)
integer - b)
int - c)
floatNum - d)
stringValue
- a)
- How do you declare a variable with an initial value in Go?
- a)
var x = 10 - b)
x = 10 var - c)
const x 10 - d)
variable x: 10
- a)
- How are multiple variables declared in a single statement in Go?
- a)
var x, y int - b)
var x = 10, y = 20 - c)
let x, y - d)
multiple var x, y
- a)
- Which type is used for declaring a floating-point variable in Go?
- a)
float32 - b)
double - c)
float - d)
decimal
- a)
- Which of the following is an example of an invalid Go data type?
- a)
int - b)
bool - c)
float64 - d)
character
- a)
- Can you change the value of a constant in Go after it has been initialized?
- a) Yes, constants are mutable
- b) No, constants cannot be changed once initialized
- c) Yes, but only within the same function
- d) Yes, constants can be reinitialized
- What is the default value of an uninitialized integer in Go?
- a)
0 - b)
nil - c)
undefined - d)
false
- a)
- How do you declare a string variable in Go?
- a)
var str string - b)
let str string - c)
declare str string - d)
string str
- a)
3. Basic Input and Output
- Which function is used to print output to the console in Go?
- a)
print() - b)
println() - c)
fmt.print() - d)
fmt.Println()
- a)
- How do you read user input from the console in Go?
- a)
input() - b)
fmt.Scan() - c)
fmt.read() - d)
getInput()
- a)
- Which package do you need to import to perform basic I/O in Go?
- a)
io - b)
fmt - c)
input - d)
output
- a)
- Which of the following is used to output formatted text in Go?
- a)
fmt.Printf() - b)
fmt.Print() - c)
fmt.Scanf() - d)
printFormatted()
- a)
- How do you scan a string input from the user in Go?
- a)
fmt.Scanln(&str) - b)
input.Scan(&str) - c)
fmt.Scan(str) - d)
readInput(&str)
- a)
- What is the syntax for reading multiple values using
fmt.Scanin Go?- a)
fmt.Scan(value1, value2) - b)
fmt.Scan(&value1, &value2) - c)
fmt.Scanln(value1, value2) - d)
input.read(value1, value2)
- a)
- Which function is used to print text without a newline in Go?
- a)
fmt.Print() - b)
fmt.PrintLine() - c)
fmt.Println() - d)
fmt.printText()
- a)
- Which of the following is used to print a formatted message in Go?
- a)
fmt.Printf() - b)
fmt.Printf() - c)
fmt.Print() - d)
fmt.Format()
- a)
- What will the following Go code print?
fmt.Println("Hello", "World")- a)
Hello World - b)
HelloWorld - c)
Hello, World - d)
HelloWorld!
- a)
- How do you print an integer variable
numin Go?- a)
fmt.Print(num) - b)
fmt.Println(num) - c)
fmt.Println("num") - d)
fmt.print(num)
- a)
Answers
| QNo | Answer |
|---|---|
| 1 | c) package main |
| 2 | a) It defines the entry point for the program |
| 3 | b) package main |
| 4 | a) import "packageName" |
| 5 | b) It indicates that the program is the entry point |
| 6 | b) After the imports section |
| 7 | a) // This is a comment |
| 8 | b) .go |
| 9 | b) Go uses the gofmt tool to automatically format code |
| 10 | b) package MyPackage |
| 11 | a) var x int |
| 12 | a) const |
| 13 | b) int |
| 14 | a) var x = 10 |
| 15 | a) var x, y int |
| 16 | a) float32 |
| 17 | d) character |
| 18 | b) No, constants cannot be changed once initialized |
| 19 | a) 0 |
| 20 | a) var str string |
| 21 | d) fmt.Println() |
| 22 | b) fmt.Scan() |
| 23 | b) fmt |
| 24 | a) fmt.Printf() |
| 25 | a) fmt.Scanln(&str) |
| 26 | b) fmt.Scan(&value1, &value2) |
| 27 | a) fmt.Print() |
| 28 | a) fmt.Printf() |
| 29 | a) Hello World |
| 30 | b) fmt.Println(num) |