Suppose I have a bitmap like this:

```
sizeofBitmapInBits = 16; // must be multiple of 8
char* bitmap = new char[sizeofBitmapInBits/8](); // 2 bytes

```

And I want to toggle a single bit of this bitmap, let's say bit n° 11.

Is this correct?

```
int numBit = 11;
int posBitmap = floor(numBit / 8); // this gives me the byte in the bitmap
char ch = bitmap[posBitmap];

int positionInByte = numBit - posBitmap * 8 ; // this gives me the bit in the byte
ch |= 1 << positionInByte; // or ch |= 0 << positionInByte
bitmap[posBitmap] = ch;

```