Bit Handout Processing and Masking #ifndef _BITDATA #define _BITDATA class BitData { public: void setID(int id); int getID(); void setColor1(int color); int getColor1(); void setColor2(int color); int getColor2(); private: unsigned char data [4]; }; #endif BitData class header file Driver program #include <iostream.h> #include "BitData.h" int main() { BitData data; data.setID(2354); cout << "ID = " << data.getID() << endl; data.setID(123123); cout << "ID = " << data.getID() << endl; data.setColor1(15); cout << "Color1 = " << data.getColor1() << endl; data.setColor1(12); cout << "Color1 = " << data.getColor1() << endl; / data.setColor2(7); cout << "Color2 = " << data.getColor2() << endl; data.setColor2(1); cout << "Color2 = " << data.getColor2() << endl; return 0; }
#include "BitData.h" void BitData::setID(int id) { unsigned int * p = (unsigned *)data; int *p = *p & 0x00000fff; // clear the ID field (leave colors 1-3) id = (id << 12) & 0xfffff000; // id shifted with trailing zeros *p = *p | id; // put into data storage member } int BitData::getID() { unsigned int * p = (unsigned int *)data; return (*p) >> 12; } void BitData::setColor1(int color) { if (color > 15) return; data[2] = data[2] & (char)0xf0; // clear out low nibble of byte #3 unsigned char mask =(unsigned char)0x0f & (unsigned char)color; data[2] = data[2] | mask; } int BitData::getColor1() { return (unsigned int)((unsigned char)0x0f & data[2]); } void BitData::s...