Improving code readability - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to declare a variable with a clear name.

C

int [1] = 10;

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Acount

Bx

Ca

Dtmp

Attempts:

3 left

💡 Hint

Common Mistakes

Using vague or single-letter names that don't explain the variable's purpose.

Using descriptive variable names like count makes the code easier to understand.

2fill in blank

medium

Complete the code to add a comment explaining the purpose of the function.

C

/* [1] */
void printMessage() {
    printf("Hello!\n");
}

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AVariable declaration

Bint main function

CThis function prints a greeting message

DLoop through array

Attempts:

3 left

💡 Hint

Common Mistakes

Writing unclear or unrelated comments that confuse readers.

Comments should clearly describe what the function does to help readers understand quickly.

3fill in blank

hard

Fix the error in the code by choosing the best variable name for readability.

C

int [1] = 5;
printf("Value: %d\n", [1]);

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Avalue

Bn

Ci

Dtemp

Attempts:

3 left

💡 Hint

Common Mistakes

Using single-letter or vague names that don't explain the variable's role.

Using value clearly shows what the variable holds, improving readability.

4fill in blank

hard

Fill both blanks to create a clear and readable for-loop.

C

for (int [1] = 0; [1] [2] 10; [1]++) {
    printf("%d\n", [1]);
}

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

Aindex

B<

C>

Di

Attempts:

3 left

💡 Hint

Common Mistakes

Using unclear variable names or wrong comparison operators that confuse the loop's purpose.

Using index as the loop variable and < as the condition makes the loop clear and standard.

5fill in blank

hard

Fill all three blanks to write a readable if-statement checking if a number is positive.

C

if ([1] [2] 0) {
    printf("[3] is positive\n");
}

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

Anum

B>

Dnumber

Attempts:

3 left

💡 Hint

Common Mistakes

Using inconsistent variable names or wrong operators that make the condition unclear.

Using num as the variable, > as the operator, and number in the message makes the code clear and easy to read.