Sending and receiving values in Go - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to send the value 5 into the channel.

Go

ch := make(chan int)
go func() {
    ch[1] 5
}()

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

A<-chan<-

B<-chan

C<-

D<-chan<-chan

Attempts:

3 left

💡 Hint

Common Mistakes

Using '<-' on the wrong side of the channel.

Confusing channel types with send/receive operators.

To send a value into a channel in Go, use the syntax 'channel <- value'.

2fill in blank

medium

Complete the code to receive a value from the channel and store it in variable x.

Go

ch := make(chan int)
go func() {
    ch <- 10
}()
x := [1] ch

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

Asend

Bmake

Cchan

D<-

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'chan' keyword instead of receive operator.

Using send operator '<-' on the wrong side.

To receive a value from a channel, use '<-channel'.

3fill in blank

hard

Fix the error in the code to correctly send the string "hello" into the channel.

Go

ch := make(chan string)
go func() {
    [1] <- "hello"
}()

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

A"ch"

Bch

Cchan

Dmake

Attempts:

3 left

💡 Hint

Common Mistakes

Using the channel name as a string.

Using 'chan' keyword instead of the channel variable.

To send a value into a channel, use the channel variable name followed by '<- value'.

4fill in blank

hard

Fill both blanks to create a channel of integers and send the value 42 into it.

Go

ch := make([1])
go func() {
    [2] <- 42
}()

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

Achan int

Bchan string

Cch

Dchan bool

Attempts:

3 left

💡 Hint

Common Mistakes

Creating a channel of wrong type.

Using wrong variable name to send the value.

Use 'make(chan int)' to create an integer channel and 'ch <- 42' to send the value.

5fill in blank

hard

Fill all three blanks to receive a value from the channel and print it.

Go

ch := make([1])
go func() {
    ch <- "GoLang"
}()
value := [2] [3]
fmt.Println(value)

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

Achan string

B<-

Cch

Dchan int

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong channel type.

Mixing up send and receive operators.

Using wrong variable name for the channel.

Create a string channel with 'chan string', receive with '<- ch', then print the value.