In this article, we will see the basics of bitwise operators, and some useful tips for manipulating the bits to achieve a task. This article assumes that you know the basics of Truth Table for various operators.

C language supports the following bitwise operators. Though we are calling it as a bitwise operators, it always operate on one or more bytes i.

By using some techniques, we can manipulate a single bit on the whole representation of the number as we will see in later sections. Bitwise OR operator takes 2 bit patterns, and perform OR operations on each pair of corresponding bits.

The following example will explain it. The Bitwise OR, will take pair of bits from each position, and if any one of the bit is 1, the result on that position will be 1. Bitwise OR is used to Turn-On bits as we will see in later sections.

The Bitwise AND will take pair of bits from each position, and if only both the bit is 1, the result on that position will be 1. Bitwise AND is used to Turn-Off bits. It is a unary operator i.

The Bitwise XOR will take pair of bits from each position, and if both the bits are different, the result on that position will be 1. If both bits are same, then the result on that position is 0. Now the result in decimal is 4. You can also note that, 0 is added as padding the in the position 0. Therefore left shifting 1 time, is equal to multiplying the value by 2.

Interesting Facts about Bitwise Operators in C - GeeksforGeeks

While performing shifting, if the operand is a signed value, then arithmetic shift will be used. If the type is unsigned, then logical shift will be used. In case of arithmetic shift, the sign-bit MSB is preserved. Logical shift will not preserve the signed bit. In the above code, we are right shifting -8 by 1.

Tutorials - Bitwise Operators and Bit Manipulations in C and C++ - icoqerum.web.fc2.com

Here arithmetic shift is applied since the operand is a signed value. The above code will result in Positive value. From the ISO-C spec:. If E1 has a signed type and a negative value, the resulting value is implementation-defined.

C Programming Examples on Bitwise Operations - Code, Output & Explanation in Linux | Sanfoundry

Hello, I am not a programmer but sort of understand truth tables, interesting though. I have just started my CCNA recently and an article on subnetting would be great. That looks like 2 multiplied by E2. Buddy is there a book or something which will explain more of this with some more examples stuff and easy to understand for a newbie. U can code in c program and check. For this operator we add 1 bit and make it negative. Notify me of followup comments via e-mail.

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C Bitwise Operators: AND, OR, XOR, Complement and Shift Operations

All rights reserved Terms of Service. Nothing like a refresher course. Richard Funderburk October 17, , 9: From the ISO-C spec: Jalal Hajigholamali October 17, , 1: Mustapha Oldache October 18, , 2: Chris October 18, , 6: Yuvaraj October 18, , 8: Thiago Jobson December 16, , 2: Carl Marx November 28, , 1: Anonymous April 9, , 8: GOPI April 29, , 6: Iswariya August 16, , 6: Omkar November 15, , 8: Siddhartha April 7, , 5: Ambareesh February 24, , 4: Thk u Clearly understand abt bitwise operator.

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