Flip bits | GameDev.net

Original Post

Oct 24, 2005 at 11:57 PM

I have a char variable (1 byte) equal to zero. I know I remember someone posting something about this, but I need to flip each bit in the byte to equal 1, so the byte is equal to the maximum value of a char. Anyone know how to do this? Thanks.

silverphyre673

Oct 25, 2005 at 12:02 AM

Excellent. Forgot about the ~! Thanks.

Oct 25, 2005 at 3:22 AM

If you wan't to flip individual bits use xor:

unsigned char c = 0x10;
c ^= 0x0f; // Inverts the lower 4 bits
printf("0x%02x", c);

Will display: 0x1f;

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