Structs in Blockchain / Solidity - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define a struct named Person with a string name.

Blockchain / Solidity

struct Person {
    string [1];
}

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

Abalance

Bage

Caddress

Dname

Attempts:

3 left

💡 Hint

Common Mistakes

Using a wrong field name like 'age' or 'address' when the task asks for 'name'.

Forgetting to specify the field name.

The struct Person should have a field called name of type string.

2fill in blank

medium

Complete the code to declare a variable of type Person named user.

Blockchain / Solidity

Person [1];

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

Auser

Baccount

Cclient

Dperson

Attempts:

3 left

💡 Hint

Common Mistakes

Using a different variable name like 'person' or 'account'.

Forgetting the semicolon at the end (not part of the blank but common error).

The variable should be named user as requested.

3fill in blank

hard

Fix the error in the struct definition by completing the missing type for the field age.

Blockchain / Solidity

struct Person {
    string name;
    [1] age;
}

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

Abool

Buint

Cstring

Daddress

Attempts:

3 left

💡 Hint

Common Mistakes

Using string or bool for age.

Using address which is for blockchain addresses.

The field age should be an unsigned integer (uint) to represent a person's age.

4fill in blank

hard

Fill both blanks to create a struct named Car with a string model and a uint year.

Blockchain / Solidity

struct [1] {
    [2] model;
    uint year;
}

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

ACar

BPerson

Cstring

Duint

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong struct name like 'Person'.

Using wrong type for model like 'uint'.

The struct should be named Car and the model field should be of type string.

5fill in blank

hard

Fill all three blanks to create a struct named Book with a string title, string author, and uint pages.

Blockchain / Solidity

struct [1] {
    [2] title;
    [3] author;
    uint pages;
}

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

ABook

Bstring

Duint

Attempts:

3 left

💡 Hint

Common Mistakes

Using different struct name.

Using wrong types for title or author.

The struct is named Book. Both title and author fields are of type string.