#include <iostream> 
using namespace std; 
const short bit0 = 0; 
const short bit1 = 1; 
const short bit2 = 2; 
const short bit3 = 3; 
const short bit4 = 4; 
const short bit5 = 5; 
const short bit6 = 6; 
const short bit7 = 7; 
int main(){ 
 unsigned char p1 = 0xA0;                                   
 unsigned char p2 = 0x3F; 
 cout << "p1 en p2 have the value:" << endl; 
 // set output to hex mode 
 cout << (short)p1 << '\t' << (short)p2 << endl;            
 //setting of bit 2 in a byte: 
 p1 = p1 | (1<<bit2); 
 //resetting of bit 4 in a byte: 
 p2 = p2 & ~(1<<bit4); 
 cout<<"p1 en p2 have after the editing the value:"<< endl; 
 cout << (short)p1 << '\t' << (short)p2 << endl; 
 system("PAUSE"); 
 return 0; 
}