Relational operators in C - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to compare if a is greater than b.

C

if (a [1] b) {
    printf("a is greater than b\n");
}

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

A>

B<

C==

D<=

Attempts:

3 left

💡 Hint

Common Mistakes

Using '<' instead of '>'

Using '==' which checks equality, not greater than

The '>' operator checks if the left value is greater than the right value.

2fill in blank

medium

Complete the code to check if x is not equal to y.

C

if (x [1] y) {
    printf("x and y are different\n");
}

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

A!=

B==

C>=

D<=

Attempts:

3 left

💡 Hint

Common Mistakes

Using '==' which checks equality, not difference

Using '>=' or '<=' which are relational but not for inequality

The '!=' operator checks if two values are not equal.

3fill in blank

hard

Fix the error in the condition to check if num is less than or equal to 100.

C

if (num [1] 100) {
    printf("num is 100 or less\n");
}

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

A==

B<

C<=

D>

Attempts:

3 left

💡 Hint

Common Mistakes

Using '<' which excludes 100

Using '==' which only checks equality

The '<=' operator checks if the left value is less than or equal to the right value.

4fill in blank

hard

Fill both blanks to create a condition that checks if value is between 10 and 20 inclusive.

C

if (value [1] 10 && value [2] 20) {
    printf("value is between 10 and 20\n");
}

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

A>=

B<

C<=

D>

Attempts:

3 left

💡 Hint

Common Mistakes

Using '<' instead of '<=' excludes 20

Using '>' instead of '>=' excludes 10

The condition uses '>=' to check value is at least 10, and '<=' to check it is at most 20.

5fill in blank

hard

Fill all three blanks to create a condition that checks if score is greater than 50 and less than 100.

C

if (score [1] 50 && score [2] 100 && score [3] 75) {
    printf("score is between 51 and 99 and greater than 75\n");
}

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

A>=

B<

C>

D<=

Attempts:

3 left

💡 Hint

Common Mistakes

Using '>=' instead of '>' includes 50 which is not desired

Using '<=' instead of '<' includes 100 which is not desired

Using '<' instead of '>' for the last condition

The first '{{BLANK_1}}' uses '>' to check score is more than 50 (not equal). The second '{{BLANK_2}}' uses '<' to check score is less than 100. The third '{{BLANK_3}}' uses '>' to check score is greater than 75.