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