Basic input concepts in Go - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to read a string input from the user.

Go

var name string
fmt.Print("Enter your name: ")
fmt.Scanln([1])
fmt.Println("Hello,", name)

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

A&name

Bname

C*name

Dname&

Attempts:

3 left

💡 Hint

Common Mistakes

Passing the variable without & causes a runtime error.

Using *name is invalid because name is not a pointer.

In Go, to read input into a variable, you must pass its address using &.

2fill in blank

medium

Complete the code to read an integer input from the user.

Go

var age int
fmt.Print("Enter your age: ")
fmt.Scanln([1])
fmt.Println("You are", age, "years old")

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

A&age

B*age

Cage

Dage&

Attempts:

3 left

💡 Hint

Common Mistakes

Passing age without & causes input not to be stored.

Using *age is invalid since age is not a pointer.

Use &age to pass the address of the integer variable to fmt.Scanln.

3fill in blank

hard

Fix the error in reading a float input from the user.

Go

var price float64
fmt.Print("Enter price: ")
fmt.Scanln([1])
fmt.Printf("Price: %.2f\n", price)

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

Aprice

Bprice&

C*price

D&price

Attempts:

3 left

💡 Hint

Common Mistakes

Passing price without & causes the value not to be stored.

Using *price is invalid because price is not a pointer.

To read input into a float64 variable, pass its address with &.

4fill in blank

hard

Fill both blanks to read two inputs: a string and an integer.

Go

var name string
var age int
fmt.Print("Enter name and age: ")
fmt.Scanln([1], [2])
fmt.Println(name, age)

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

A&name

Bname

C&age

Dage

Attempts:

3 left

💡 Hint

Common Mistakes

Passing variables without & causes input not to be stored.

Mixing & and non-& variables causes errors.

Use &name and &age to pass addresses of variables to fmt.Scanln for input.

5fill in blank

hard

Fill all three blanks to read a string, an integer, and a float input.

Go

var name string
var age int
var height float64
fmt.Print("Enter name, age, and height: ")
fmt.Scanln([1], [2], [3])
fmt.Println(name, age, height)

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

A&name

B&age

C&height

Dheight

Attempts:

3 left

💡 Hint

Common Mistakes

Forgetting & causes input not to be stored.

Passing a variable without & among others causes runtime errors.

Pass the addresses of all variables using & to read multiple inputs with fmt.Scanln.