Nested structures - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define a nested structure.

C

struct Point {
    int x;
    int y;
};

struct Rectangle {
    struct Point [1];
    struct Point bottomRight;
};

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

AtopRight

BtopLeft

Ccorner

Dpoint

Attempts:

3 left

💡 Hint

Common Mistakes

Using a generic name like 'point' instead of a descriptive one.

Forgetting to name the nested struct member.

The nested structure member is named 'topLeft' to represent the top-left corner point of the rectangle.

2fill in blank

medium

Complete the code to access the x coordinate of the topLeft point in a Rectangle variable.

C

struct Rectangle rect;
int x_coord = rect.[1].x;

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AtopLeft

Bpoint

CbottomRight

Dcorner

Attempts:

3 left

💡 Hint

Common Mistakes

Accessing bottomRight instead of topLeft.

Trying to access x directly from rect without the nested member.

To access the x coordinate of the topLeft point, use rect.topLeft.x.

3fill in blank

hard

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

C

struct Rectangle rect = { { [1], 10 }, {20, 30} };

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A{5}

BtopLeft

C5

Dx

Attempts:

3 left

💡 Hint

Common Mistakes

Using the member name instead of a value.

Using braces incorrectly around a single integer.

The nested Point is initialized with two integers. The first integer is 5 for x coordinate.

4fill in blank

hard

Fill both blanks to declare and initialize a nested structure variable.

C

struct Rectangle [1] = { {10, [2], {20, 30} };

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Arect

B15

C25

Dbox

Attempts:

3 left

💡 Hint

Common Mistakes

Using an invalid variable name.

Confusing the y coordinate value.

The variable name is 'rect' and the y coordinate of topLeft is 15.

5fill in blank

hard

Fill all three blanks to define a nested structure and assign values.

C

struct Point {
    int [1];
    int [2];
};

struct Rectangle {
    struct Point topLeft;
    struct Point [3];
};

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

Ax

By

CbottomRight

Dcorner

Attempts:

3 left

💡 Hint

Common Mistakes

Using incorrect member names for Point.

Naming the second Point member incorrectly.

The Point struct has members 'x' and 'y'. The Rectangle has a second Point named 'bottomRight'.