Function prototypes - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to declare a function prototype for a function named add that takes two integers and returns an integer.

C

int [1](int a, int b);

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

Aadd

Bsum

Ccalculate

Dtotal

Attempts:

3 left

💡 Hint

Common Mistakes

Using a different function name than the one defined later.

Forgetting to specify the return type.

The function prototype declares a function named 'add' that takes two integers and returns an integer.

2fill in blank

medium

Complete the function prototype for a function named printMessage that takes no parameters and returns nothing.

C

void [1](void);

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

Ashow

Bdisplay

CprintMessage

Dmessage

Attempts:

3 left

💡 Hint

Common Mistakes

Using an incorrect function name.

Leaving the parentheses empty instead of using 'void'.

The prototype declares a function named 'printMessage' that takes no parameters and returns void.

3fill in blank

hard

Fix the error in the function prototype for multiply that takes two floats and returns a float.

C

float [1](float x, float y);

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

Amult

Bmultiply

Cproduct

Dmul

Attempts:

3 left

💡 Hint

Common Mistakes

Using a shortened or incorrect function name.

Misspelling the function name.

The correct function name is 'multiply' matching the intended function.

4fill in blank

hard

Fill both blanks to declare a function prototype named maxValue that takes two integers and returns an integer.

C

[1] [2](int a, int b);

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

Aint

Bfloat

CmaxValue

Dvoid

Attempts:

3 left

💡 Hint

Common Mistakes

Using the wrong return type like 'float' or 'void'.

Using an incorrect function name.

The return type is 'int' and the function name is 'maxValue'.

5fill in blank

hard

Fill all three blanks to declare a function prototype named concatStrings that takes two pointers to char and returns a pointer to char.

C

[1] [2](char *[3], char *str2);

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

Achar *

BconcatStrings

Cstr1

Dvoid

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'void' as return type instead of 'char *'.

Using wrong parameter names.

The function returns 'char *', is named 'concatStrings', and the first parameter is 'char *str1'.