How to change the digits of a two-byte number (C++)?

Question

C++ / C#

Help me plss.
There is an integer two-byte number
We need to change its 0th, 5th and 11th digit to 0

Answer 1

You need to do a bitwise AND with a mask where there are 0 in the bits you need (and 1 in the rest). The mask can be specified directly with a binary or hexadecimal constant.