What is bitwise operator and how it used?

Question

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Answer 1

bitwise operators are used in testing conditions like " &&, &, || , == " .

Answer 2

bitwise operators are only :
*)&(and) gives 1 if only the 2 bits are 1
*)|(or) gives 1 if one of them at least is 1
*)~(not) invert bits (ones complement)
*)^ (xor) gives 1 if only one of them is one
*)>>(right shift) value is moved right by the number of bits specified by the right operand.
*)<<(left shift) value is moved left by the number of bits specified by the right operand.
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those are binary operators(bitwise operators) . you can apply them only in binary form . for example :(15 &1) is :
1111
&
0001
_______
0001
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&& || ! == are logical operators used for testing conditions