Best practices in Go - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to declare a package in Go.

Go

package [1]

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

Afunc

Bfmt

Cvar

Dmain

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'fmt' as a package name instead of 'main'.

Trying to declare a function or variable instead of a package.

In Go, every file starts with a package declaration. The main package is used for executable programs.

2fill in blank

medium

Complete the code to import the fmt package.

Go

import [1]fmt"

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

A"

B'

C`

D:

Attempts:

3 left

💡 Hint

Common Mistakes

Using single quotes or backticks instead of double quotes.

Using a colon instead of quotes.

In Go, import paths are enclosed in double quotes "".

3fill in blank

hard

Fix the error in the function declaration by completing the code.

Go

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

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

Afunc

BMain

Cmain

Dprint

Attempts:

3 left

💡 Hint

Common Mistakes

Capitalizing 'Main' instead of 'main'.

Using 'func' or 'print' as function names.

The entry point function in Go programs is main with a lowercase 'm'.

4fill in blank

hard

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

Go

ages := map[string]int{
    "Alice": 30,
    "Bob": 25,
    "Carol": 27,
}

for name, age := range ages {
    if age [1] 26 {
        fmt.Println(name, "is older than", [2])
    }
}

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

A>

Bage

C<

Dname

Attempts:

3 left

💡 Hint

Common Mistakes

Using '<' instead of '>' in the condition.

Printing the variable 'name' instead of 'age' for the age value.

The condition checks if age is greater than 26, and prints the name and age.

5fill in blank

hard

Fill all three blanks to create a slice of strings and print each element.

Go

names := [][1]{"Anna", "Ben", "Cara"}

for [2], [3] := range names {
    fmt.Println(index, name)
}

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

Astring

Bindex

Cname

Dint

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'int' instead of 'string' for the slice type.

Using incorrect variable names in the for loop.

The slice holds strings, and the for loop uses index and name to iterate and print each element.