Nested structures in C++ - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define a nested structure inside another structure.

C++

struct Outer {
    struct [1] {
        int x;
    } inner;
};

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

AInner

BNested

Cinner

DInnerStruct

Attempts:

3 left

💡 Hint

Common Mistakes

Using the member variable name instead of the structure name.

Using lowercase for the structure name.

The nested structure inside Outer is named 'Inner'.

2fill in blank

medium

Complete the code to access the member 'x' of the nested structure.

C++

Outer::Inner obj;
obj.[1] = 10;

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

Az

By

Cinner

Dx

Attempts:

3 left

💡 Hint

Common Mistakes

Trying to access a member that does not exist.

Confusing the nested structure name with its member.

The member 'x' is defined inside the nested structure Inner.

3fill in blank

hard

Fix the error in the code to correctly initialize the nested structure member.

C++

struct Outer {
    struct Inner {
        int x;
    } [1];
};

Outer o = {{{{10}}}};

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

Ainner

BInner

CinnerObj

DobjInner

Attempts:

3 left

💡 Hint

Common Mistakes

Using the structure name instead of the member variable name.

Using a different variable name not declared.

The member variable of type Inner is named 'inner', so it must be used in initialization.

4fill in blank

hard

Fill both blanks to define and initialize a nested structure with two members.

C++

struct Outer {
    struct [1] {
        int a;
        int [2];
    } inner;
};

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

AInner

Bb

Cc

DInnerStruct

Attempts:

3 left

💡 Hint

Common Mistakes

Using incorrect member names.

Using different structure names.

The nested structure is named 'Inner' and the second member is 'b'.

5fill in blank

hard

Fill all three blanks to create a nested structure and initialize its members.

C++

struct Outer {
    struct [1] {
        int [2];
        int [3];
    } inner;
};

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

AInner

Ba

Cb

Dc

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong member names or structure names.

Confusing member names with structure names.

The nested structure is named 'Inner' with members 'a' and 'b'.