File path handling in MATLAB - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to join folder and file name into a full path.

MATLAB

fullPath = fullfile([1], 'data.txt');

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

AfolderName

BfileName

CpathName

DfilePath

Attempts:

3 left

💡 Hint

Common Mistakes

Using the file name variable instead of the folder name.

Using a variable that does not exist.

The fullfile function joins folder and file names into a full path. Here, folderName is the folder part.

2fill in blank

medium

Complete the code to extract the file extension from a file path.

MATLAB

[~, ~, [1]] = fileparts(filePath);

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

Aextension

Bfolder

Cfilename

Dfilepath

Attempts:

3 left

💡 Hint

Common Mistakes

Using the wrong output position for the extension.

Confusing file name with extension.

The fileparts function returns the folder, file name, and extension. The third output is the file extension.

3fill in blank

hard

Fix the error in the code to check if a path is a folder.

MATLAB

if isfolder([1])
    disp('It is a folder.');
end

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

AfilePath

BfolderPath

CfileName

DfileExtension

Attempts:

3 left

💡 Hint

Common Mistakes

Passing a file name or extension instead of a folder path.

Using a variable that does not represent a folder.

The isfolder function checks if the input is a folder path. Use the variable that stores the folder path.

4fill in blank

hard

Fill both blanks to create a path and check if it exists.

MATLAB

fullPath = fullfile([1], [2]);
if exist(fullPath, 'file')
    disp('File exists.');
end

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

AfolderName

BfileName

CfolderPath

DfileExtension

Attempts:

3 left

💡 Hint

Common Mistakes

Swapping folder and file name in fullfile.

Using file extension instead of file name.

Use folderName and fileName to build the full path. Then exist checks if the file exists.

5fill in blank

hard

Fill all three blanks to split a path and rebuild it with a new extension.

MATLAB

[folder, name, [1]] = fileparts(oldPath);
newPath = fullfile(folder, [name [2] [3]]);

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

Aextension

B'.'

C'txt'

D'/'

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong variable names for extension.

Using slash '/' instead of dot '.' for extension separator.

Extract the extension with extension. Then rebuild the file name by joining name, a dot '.', and the new extension 'txt'.