If-elseif-else statements in MATLAB - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to check if the variable x is positive.

MATLAB

if [1] > 0
    disp('Positive number');
end

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

Ax

By

Cz

Dnum

Attempts:

3 left

💡 Hint

Common Mistakes

Using a variable name other than x.

Forgetting to write the variable before the comparison.

The variable x is used to check if it is greater than zero.

2fill in blank

medium

Complete the code to add an elseif condition checking if x is zero.

MATLAB

if x > 0
    disp('Positive number');
elseif [1] == 0
    disp('Zero');
end

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

Ay

Bx

Cnum

Dvalue

Attempts:

3 left

💡 Hint

Common Mistakes

Using assignment = instead of equality ==.

Using a wrong variable name.

The elseif condition must check if x equals zero.

3fill in blank

hard

Fix the error in the else statement syntax.

MATLAB

if x > 0
    disp('Positive');
elseif x == 0
    disp('Zero');
[1]
    disp('Negative');
end

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

Aend

Belseif

Celse if

Delse

Attempts:

3 left

💡 Hint

Common Mistakes

Writing elseif without a condition.

Writing else if as two words.

Using end instead of else.

The correct keyword for the last condition is else without any condition.

4fill in blank

hard

Fill both blanks to complete the if-elseif-else structure checking if x is positive, zero, or negative.

MATLAB

if x [1] 0
    disp('Positive');
elseif x [2] 0
    disp('Zero');
else
    disp('Negative');
end

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

A>

B<

C==

D!=

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong comparison operators like < or !=.

Mixing up the order of conditions.

The first condition checks if x is greater than zero, the second if x equals zero.

5fill in blank

hard

Fill all three blanks to create a nested if-elseif-else that checks if x is positive, zero, or negative and prints a message accordingly.

MATLAB

if [1] > 0
    disp('Positive');
elseif [2] == 0
    disp('Zero');
else
    disp([3]);
end

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

Ax

C'Negative number'

D'Negative'

Attempts:

3 left

💡 Hint

Common Mistakes

Using different variable names in conditions.

Forgetting to put quotes around the message string.

The conditions check variable x. The else prints 'Negative'.