Function declaration and definition in C++ - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to declare a function named add that returns an int.

C++

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

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

Acalculate

Bsum

Cadd

Dtotal

Attempts:

3 left

💡 Hint

Common Mistakes

Using a different function name than 'add'.

Omitting the function name.

The function declaration requires the function name after the return type. Here, the function name is add.

2fill in blank

medium

Complete the code to define the function add that returns the sum of two integers.

C++

int add(int a, int b) {
    return a [1] b;
}

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A/

B+

C*

D-

Attempts:

3 left

💡 Hint

Common Mistakes

Using subtraction or multiplication instead of addition.

Forgetting the return statement.

The function should return the sum, so the operator is +.

3fill in blank

hard

Fix the error in the function definition to correctly declare the return type.

C++

[1] add(int a, int b) {
    return a + b;
}

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Adouble

Bvoid

Cfloat

Dint

Attempts:

3 left

💡 Hint

Common Mistakes

Using void as return type when the function returns a value.

Using floating-point types when integers are returned.

The function returns an integer sum, so the return type must be int.

4fill in blank

hard

Fill both blanks to declare and define a function named multiply that returns the product of two int parameters.

C++

int [1](int x, int y) {
    return x [2] y;
}

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

Amultiply

Badd

C*

D+

Attempts:

3 left

💡 Hint

Common Mistakes

Using addition operator instead of multiplication.

Using wrong function name.

The function name is multiply and the operator for multiplication is *.

5fill in blank

hard

Fill all three blanks to declare and define a function named maxValue that returns the greater of two int values.

C++

int [1](int a, int b) {
    if (a [2] b) {
        return a;
    } else {
        return [3];
    }
}

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

AmaxValue

B>

Cb

D<

Attempts:

3 left

💡 Hint

Common Mistakes

Using less than operator instead of greater than.

Returning the wrong variable in the else block.

The function name is maxValue. The condition checks if a is greater than b using >. If not, it returns b.