resetting counter using bitwise XOR - High Level Programming

mrgubbala · #1 (**permalink**) 09-13-2006

Hi !
How to reset a variable to 0 after a reset value, say 10 using bitwise
XOR.

For example,

int cnt=0;

if(cnt<10)
cnt++;
else
cnt = 0;

How can we achieve this by using XOR only.

thanks,

blowtorch · #2 (**permalink**) 09-14-2006

Remember that any number, when bitwise XORed with itself will become 0.

Code:

if(cnt<10) {
   cnt++;
   fprintf(stdout,"cnt: %d\n",cnt);
}
else {
   cnt=cnt^cnt;
}

If you put this in a while(1), you'll get an infinite loop.

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