//Bitwise Operations
 
//Turn a bit on
int startVal = 4;                 //100 
int bitVal = 2;                   //010
int newVal = startVal | bitVal;   //110 (6) 
//Alternatively
startVal |= bitVal; 
 
//Turn a bit off
int startVal = 7;                 //111 
int bitVal = 5;                   //101
int newVal = startVal & bitVal;   //101 (5) 
//Alternatively
startVal &= bitVal; 
 
 
//Query bit status
int startVal = 6;                 //110  
int bitVal = 4;                   //100
int newVal = startVal & bitVal;   //100 
if(newVal != 0)
{
  //Bit was on.  
}
 
int startVal = 6;                 //110  
int bitVal = 1;                   //001
int newVal = startVal & bitVal;   //000 
if(newVal == 0)
{
  //Bit was off.  
}