For loop in C - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to print numbers from 0 to 4.

C

for (int i = 0; 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 >= or > will cause the loop to not run as expected.

Using <= will print an extra number.

The loop should run while i is less than 5 to print numbers 0 to 4.

2fill in blank

medium

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

C

int sum = 0;
for (int i = 1; i [1] 6; i++) {
    sum += i;
}
printf("%d\n", sum);

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

A>=

B<=

C<

D>

Attempts:

3 left

💡 Hint

Common Mistakes

Using <= 5 instead of < 6 is correct but not in the options.

Using > or >= will cause the loop to not run.

The loop should run while i is less than 6 to include numbers 1 to 5.

3fill in blank

hard

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

C

for (int i = 2; i [1] 10; i += 2) {
    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 < 10 will exclude 10 from the output.

Using > or >= will cause the loop to not run.

The loop should run while i 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 will not print numbers down from 10.

Using > excludes 1 from the output.

The loop starts at 10 and runs while i is greater than or equal to 1.

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 the loop causes errors.

Using < instead of <= excludes 5.

The loop variable is i, and the loop runs while i is less than or equal to 5.