Bitwise operators – Computer Sir Ki Class
  

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Bitwise operators

Bit-wise operators work after the given operands are converted to their binary equivalent value.

Learning Objectives

  • Understanding the concept of bit-wise operators with the help of bit-wise and & and bit-wise or | operators.

Source Code

TC++ #1743

#include <iostream.h>
#include <conio.h>
int main()
{
clrscr();
int x=81,y=61,z;
z=x&y;
cout<<z<<endl;
z=x|y;
cout<<z<<endl;
getch();
return 0;
}

Source Code

#include <iostream>
using namespace std;
int main()
{
int x=81,y=61,z;
z=x&y;
cout<<z<<endl;
z=x|y;
cout<<z<<endl;
return 0;
}

Test it !

Run Output

17
125

Code Understanding

z=x&y;
here the value of x which is 81 and y which is 61 in this example will be converted to binary equivalents
01010001
00111101
Now match vertically the columns bit-wise. Mark a 1 where 1 is present in both top and bottom row. This will yield
00010001
Now convert this value back to decimal. This will result in a value of 17.

z=x|y;
In this case instead of check for 1 present in both top and bottom row, check for 1 present in any of the row. This will yield.
01111101
Converting this to decimal will yield 125.

Notes

The list of bit-wise operators is as follows:
& – Bit-wise AND
| – Bit-wise OR (inclusive OR)
^ – Bit-wise exclusive OR
~ – Bit-wise unary complement (Bit inversion)
<< – Bit-wise left shift
>> – Bit-wise right shift

You can try other combinations of bit-wise arithmetic operations.

<< and >> are visibly similar to IO insertion and IO extraction symbols used with cout and cin respectively, but they operate as bit-wise operators when operands on both side are mathematical numbers.


Suggested Filename(s): operators-bitwise.cpp, bitwisedemo.cpp, bitop.cpp



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CSKC| Created: 16-Dec-2017 | Updated: 29-Jan-2018|






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