How to add even parity bit on 7-bit binary number

Question

I am continuing from my previous question. I am making a c# program where the user enters a 7-bit binary number and the computer prints out the number with an even parity bit to

Answer 1

Might be more fun to duplicate the circuit they use to do this..

bool odd = false;

for(int i=6;i>=0;i--)
  odd ^= (number & (1 << i)) > 0;

Then if you want even parity set bit 7 to odd, odd parity to not odd.

or

bool even = true;

for(int i=6;i>=0;i--)
  even ^= (number & (1 << i)) > 0;

The circuit is dual function returns 0 and 1 or 1 and 0, does more than 1 bit at a time as well, but this is a bit light for TPL....

PS you might want to check the input for < 128 otherwise things are going to go well wrong.

ooh didn't notice the homework tag, don't use this unless you can explain it.