Bitwise NOT in C - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to apply the bitwise NOT operator to the variable num.

C

int num = 5;
int result = [1]num;
printf("%d\n", result);

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

A^

B&

C|

D~

Attempts:

3 left

💡 Hint

Common Mistakes

Using bitwise AND (&) instead of NOT (~).

Using bitwise OR (|) or XOR (^) operators.

The bitwise NOT operator in C is the tilde symbol ~. It flips all bits of the number.

2fill in blank

medium

Complete the code to print the bitwise NOT of the variable value.

C

int value = 0;
int inverted = [1]value;
printf("%d\n", inverted);

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

A&

B^

C~

D|

Attempts:

3 left

💡 Hint

Common Mistakes

Using logical NOT (!) instead of bitwise NOT (~).

Using bitwise AND (&) or OR (|) by mistake.

The bitwise NOT operator is ~, which flips all bits of the integer.

3fill in blank

hard

Fix the error in the code to correctly compute the bitwise NOT of x.

C

int x = 12;
int y = [1] x;
printf("%d\n", y);

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

A~

B!

C&

D|

Attempts:

3 left

💡 Hint

Common Mistakes

Using logical NOT (!) instead of bitwise NOT (~).

Using bitwise AND (&) or OR (|) operators.

The bitwise NOT operator is ~. Using ! is logical NOT, which is incorrect here.

4fill in blank

hard

Fill both blanks to create a dictionary-like structure using a struct and apply bitwise NOT to val.

C

struct Data {
    int val;
};

struct Data d = {10};
int inverted = [1]d.[2];
printf("%d\n", inverted);

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

A~

B!

Cval

Dvalue

Attempts:

3 left

💡 Hint

Common Mistakes

Using logical NOT (!) instead of bitwise NOT (~).

Using incorrect member name like value.

Use the tilde (~) for bitwise NOT and access the member val of the struct.

5fill in blank

hard

Fill all three blanks to create a function that returns the bitwise NOT of its integer parameter.

C

int bitwiseNot(int [1]) {
    return [2][3];
}

int main() {
    int num = 7;
    printf("%d\n", bitwiseNot(num));
    return 0;
}

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

Ax

B~

Dnum

Attempts:

3 left

💡 Hint

Common Mistakes

Using different variable names in parameter and return.

Using logical NOT (!) instead of bitwise NOT (~).

The function parameter is x. The return statement applies bitwise NOT (~) to x.