Local functions in MATLAB - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define a local function named 'square' that returns the square of input 'x'.

MATLAB

function y = main()
    y = square(5);
end

function result = [1](num)
    result = num^2;
end

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

Apower

Bmultiply

Ccube

Dsquare

Attempts:

3 left

💡 Hint

Common Mistakes

Using a different function name than the one called in main.

Forgetting to define the local function after the main function.

The local function must be named 'square' to match the call in the main function.

2fill in blank

medium

Complete the code to call the local function 'greet' inside the main function.

MATLAB

function main()
    message = [1]('Alice');
    disp(message);
end

function msg = greet(name)
    msg = ['Hello, ' name '!'];
end

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

Agreet

Bhello

CsayHello

Dwelcome

Attempts:

3 left

💡 Hint

Common Mistakes

Calling a function name that does not exist.

Using a different case or spelling for the function name.

The local function is named 'greet', so the call must use 'greet'.

3fill in blank

hard

Fix the error in the local function definition by completing the function header correctly.

MATLAB

function output = main()
    output = addFive(10);
end

function result = [1](x)
    result = x + 5;
end

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

AAddfive

BaddFive

Caddfive

Dadd_Five

Attempts:

3 left

💡 Hint

Common Mistakes

Using incorrect capitalization in the function name.

Adding underscores or changing spelling.

The function name must exactly match the call in main, which is 'addFive'.

4fill in blank

hard

Fill both blanks to create a local function 'multiply' that multiplies two inputs 'a' and 'b'.

MATLAB

function result = main()
    product = multiply(3, 4);
    disp(product);
end

function [1] = [2](a, b)
    [1] = a * b;
end

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

Aresult

Boutput

Cmultiply

Dprod

Attempts:

3 left

💡 Hint

Common Mistakes

Using different names for the function or output variable than in the call.

Mixing up the order of output variable and function name.

The function output variable is 'result' and the function name is 'multiply' to match the call.

5fill in blank

hard

Fill all three blanks to create a local function 'concatStrings' that joins two strings with a space.

MATLAB

function result = main()
    combined = concatStrings('Hello', 'World');
    disp(combined);
end

function [1] = [2](str1, str2)
    [1] = [str1 [3] str2];
end

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

Aresult

BconcatStrings

C' '

Dstrcat

Attempts:

3 left

💡 Hint

Common Mistakes

Using the wrong function name or output variable.

Forgetting to add the space between strings.

Using 'strcat' instead of square brackets for concatenation.

The output variable is 'result', the function name is 'concatStrings', and the space character is ' ' to join the strings.