Bit

Question 1

Bit masking - turn nth bit on

Answer 1

a = a | (1 &laquo_space;n)

Question 2

Bit masking - turn nth bit off

Answer 2

a = a & (~(1 &laquo_space;n))

Question 3

Bit masking - toggle nth bit

Answer 3

a = a ^ (1 &laquo_space;n)

Question 4

Bit masking - query nth bit (ask it’s true or false)

Answer 4

x = a & (1 &laquo_space;n)

If x = 0, it’s off and vice verse