Relational operators in C++ - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to check if a is less than b.

C++

bool result = a [1] b;

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

A!=

B>

C<

D==

Attempts:

3 left

💡 Hint

Common Mistakes

Using '>' instead of '<' reverses the comparison.

Using '==' checks equality, not less than.

The < operator checks if the left value is less than the right value.

2fill in blank

medium

Complete the code to check if x is greater than or equal to y.

C++

if (x [1] y) {
    // do something
}

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

A<

B<=

C==

D>=

Attempts:

3 left

💡 Hint

Common Mistakes

Using '<=' checks the opposite condition.

Using '==' only checks equality.

The >= operator checks if the left value is greater than or equal to the right value.

3fill in blank

hard

Fix the error in the code to correctly check if num is not equal to 10.

C++

if (num [1] 10) {
    // do something
}

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

A!=

B==

C=

D<>

Attempts:

3 left

💡 Hint

Common Mistakes

Using '=' assigns a value instead of comparing.

Using '<>' is not valid in C++.

The '!=' operator checks if two values are not equal. '=' is assignment, not comparison.

4fill in blank

hard

Fill both blanks to create a condition that checks if val is between 5 and 15 inclusive.

C++

if (val [1] 5 && val [2] 15) {
    // do something
}

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

A>=

B<

C<=

D>

Attempts:

3 left

💡 Hint

Common Mistakes

Using '>' or '<' excludes the boundary values.

Mixing up the operators reverses the logic.

The condition checks if val is greater than or equal to 5 and less than or equal to 15.

5fill in blank

hard

Fill all three blanks to create a condition that checks if score is greater than 50, less than 100, and not equal to 75.

C++

if (score [1] 50 && score [2] 100 && score [3] 75) {
    // do something
}

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

A<

B>

C!=

D<=

Attempts:

3 left

💡 Hint

Common Mistakes

Using '<=' or '>=' changes the range boundaries.

Using '==' instead of '!=' includes 75.

The condition checks if score is greater than 50, less than 100, and not equal to 75.