Loop execution flow - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to print numbers from 1 to 5 using a for loop.

C

for(int i = 1; i [1] 5; i++) {
    printf("%d\n", i);
}

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

A>

B<

C<=

D>=

Attempts:

3 left

💡 Hint

Common Mistakes

Using '<' will stop the loop before printing 5.

Using '>' or '>=' will cause the loop to never run.

The loop should continue as long as i is less than or equal to 5 to print numbers 1 through 5.

2fill in blank

medium

Complete the code to sum numbers from 1 to 10 using a while loop.

C

int sum = 0;
int i = 1;
while(i [1] 10) {
    sum += i;
    i++;
}

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

A>

B<=

C>=

D<

Attempts:

3 left

💡 Hint

Common Mistakes

Using '<' will exclude 10 from the sum.

Using '>' or '>=' will cause the loop to never run.

The loop should run while i is less than or equal to 10 to include 10 in the sum.

3fill in blank

hard

Fix the error in the for loop condition to print even numbers from 2 to 10.

C

for(int num = 2; num [1] 10; num += 2) {
    printf("%d\n", num);
}

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

A<=

B>=

C>

D<

Attempts:

3 left

💡 Hint

Common Mistakes

Using '<' will exclude 10 from printing.

Using '>' or '>=' will cause the loop to never run.

The loop should continue while num is less than or equal to 10 to include 10.

4fill in blank

hard

Fill both blanks to create a for loop that prints numbers from 10 down to 1.

C

for(int i = [1]; i [2] 1; i--) {
    printf("%d\n", i);
}

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

A10

B<=

C>=

D1

Attempts:

3 left

💡 Hint

Common Mistakes

Starting at 1 instead of 10.

Using '<=' instead of '>=' in the condition.

The loop starts at 10 and continues while i is greater than or equal to 1, decreasing by 1 each time.

5fill in blank

hard

Fill all three blanks to create a for loop that prints squares of numbers from 1 to 5.

C

for(int [1] = 1; [2] [3] 5; [1]++) {
    printf("%d\n", [1] * [1]);
}

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

Ai

C<=

D<

Attempts:

3 left

💡 Hint

Common Mistakes

Using different variable names in initialization and condition.

Using '<' instead of '<=' to include 5.

The loop variable is i. It starts at 1 and runs while i is less than or equal to 5.