What is Go - Interactive Quiz & Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to print a greeting in Go.

Go

package main

import "fmt"

func main() {
    fmt.[1]("Hello, Go!")
}

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

APrintln

BPrint

CPrintf

DPrintfln

Attempts:

3 left

💡 Hint

Common Mistakes

Using Print instead of Println will not add a new line.

The Println function prints the text with a new line at the end.

2fill in blank

medium

Complete the code to declare a variable with value 10.

Go

package main

func main() {
    var x [1] = 10
}

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

Abool

Bint

Cfloat

Dstring

Attempts:

3 left

💡 Hint

Common Mistakes

Using string or bool types for numbers.

The int type is used for whole numbers like 10.

3fill in blank

hard

Fix the error in the function declaration.

Go

package main

func [1]() {
    // code
}

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

Adef

Bfunction

Cfunc

Dmain

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'function' or 'def' which are not Go keywords.

The function name must be main exactly for the program entry point.

4fill in blank

hard

Fill both blanks to create a map with string keys and int values.

Go

package main

func main() {
    m := make(map[[1]][2])
}

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

Astring

Bint

Cfloat64

Dbool

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up key and value types.

Maps use key and value types inside brackets. Here keys are strings and values are integers.

5fill in blank

hard

Fill all three blanks to declare a slice of strings and add an element.

Go

package main

import "fmt"

func main() {
    var s [][1]
    s = append(s, [2])
    fmt.[3](s)
}

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

Aint

B"hello"

CPrintln

Dstring

Attempts:

3 left

💡 Hint

Common Mistakes

Using int instead of string for the slice type.

A slice of strings is declared with []string. We append a string literal and print with Println.