Using bitwise operators

Question

I\'ve been studying C# and ran accross some familiar ground from my old work in C++. I never understood the reason for bitwise operators in a real application. I\'ve never u

Answer 1

Another typical (but I think less common) usage is to compose several numbers into one big number. An example for this can be the windows RGB macro:

#define RGB(r, g ,b)  ((DWORD) (((BYTE) (r) | ((WORD) (g) << 8)) | (((DWORD) (BYTE) (b)) << 16)))

Where you take 3 bytes and compose an integer from them the represent the RGB value.