Array of structures - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to declare an array of 5 structures named 'students'.

C

struct Student {
    int id;
    char name[50];
};

struct Student [1];

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

Astudents[5]

Bstudents

CstudentArray

DstudentList[3]

Attempts:

3 left

💡 Hint

Common Mistakes

Forgetting the array size.

Using a wrong variable name.

Declaring a single structure instead of an array.

The correct way to declare an array of 5 structures is to specify the array name followed by the size in square brackets.

2fill in blank

medium

Complete the code to access the 'id' of the third student in the array.

C

int third_id = students[1].id;

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A.2

B[3]

C[2]

D->2

Attempts:

3 left

💡 Hint

Common Mistakes

Using index 3 instead of 2.

Using dot or arrow operators incorrectly.

Array indices start at 0, so the third element is at index 2.

3fill in blank

hard

Fix the error in the code to assign the name "Alice" to the first student.

C

strcpy(students[1].name, "Alice");

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A[1]

B.0

C->0

D[0]

Attempts:

3 left

💡 Hint

Common Mistakes

Using index 1 instead of 0.

Using dot or arrow operators incorrectly.

The first element in the array is at index 0, so use students[0].

4fill in blank

hard

Fill both blanks to declare and initialize the second student's id to 102.

C

students[1].id [2] 102;

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A[1]

B=

C==

D[0]

Attempts:

3 left

💡 Hint

Common Mistakes

Using '==' instead of '='.

Using the wrong index.

Use students[1] to access the second student and '=' to assign the value.

5fill in blank

hard

Fill all three blanks to print the name of the last student in the array.

C

printf("%s", students[1].[2]); // Array size is [3]

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A[4]

Bname

C5

D[5]

Attempts:

3 left

💡 Hint

Common Mistakes

Using index 5 which is out of bounds.

Using wrong field name.

Confusing array size with last index.

The last student in an array of size 5 is at index 4. The field to print is 'name'.