Push Operation on Stack in DSA C - Interactive Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to push an element onto the stack.

DSA C

void push(int stack[], int *top, int value, int max_size) {
    if (*top < max_size - 1) {
        *top = *top [1] 1;
        stack[*top] = value;
    }
}

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

A-

B+

C*

D/

Attempts:

3 left

💡 Hint

Common Mistakes

Using '-' instead of '+' to update the top index.

Forgetting to update the top before assigning the value.

To push an element, we increase the top index by 1 before assigning the value.

2fill in blank

medium

Complete the condition to check if the stack is full before pushing.

DSA C

if (*top [1] max_size - 1) {
    // Stack is full
}

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

A==

B>

C<

D>=

Attempts:

3 left

💡 Hint

Common Mistakes

Using '>' or '>=' which can cause out of bounds errors.

Using '<' which checks for not full.

The stack is full when top equals max_size - 1.

3fill in blank

hard

Fix the error in updating the top index during push.

DSA C

void push(int stack[], int *top, int value, int max_size) {
    if (*top < max_size - 1) {
        *top [1] *top + 1;
        stack[*top] = value;
    }
}

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

A=

B==

C+=

D-=

Attempts:

3 left

💡 Hint

Common Mistakes

Using '==' which causes no change to *top.

Using '-=' which decreases top incorrectly.

Use '=' to assign the incremented value to *top, not '==' which is a comparison.

4fill in blank

hard

Fill both blanks to complete the push function with overflow check.

DSA C

void push(int stack[], int *top, int value, int max_size) {
    if (*top [1] max_size - 1) {
        printf("Stack overflow\n");
        return;
    }
    *top [2] *top + 1;
    stack[*top] = value;
}

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

A==

B<

C=

D>

Attempts:

3 left

💡 Hint

Common Mistakes

Using '<' in overflow check which is incorrect.

Using '==' to update top instead of assignment.

Check if top equals max_size - 1 for overflow, then assign incremented top with '='.

5fill in blank

hard

Fill all three blanks to implement push with overflow check and update.

DSA C

void push(int stack[], int *top, int value, int max_size) {
    if (*top [1] max_size - 1) {
        printf("Stack overflow\n");
        return;
    }
    *top [2] *top [3] 1;
    stack[*top] = value;
}

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

A==

B+

D=

Attempts:

3 left

💡 Hint

Common Mistakes

Using '<' or '>' in overflow check.

Using '+=' instead of '=' and '+' separately.

Check overflow with '==', assign top with '=', and increment by '+ 1'.