Bitwise operators are AND, OR, XOR and NOT used to manipulate data at the bit level by shifting or testing bits.

The following table lists the bitwise operators in C++.

  #include <iostream.h>
  using namespace std;
  void main()
   {
     unsigned int num=2;          
     unsigned int shift=1;
     num = num << shift;
     cout << "The Value after shift left is::" << num << '\n';
   }

  The Value after shift left is::4

In the above example the binary value of 2 is "10" when "1" bit is shifted to the left the binary value would be "100" which is equivalent to decimal "4".