Basic course of C language (ii) data types, variables, and operators (17)

Source: Internet
Author: User
Tags bitwise bitwise operators logical operators
5.3 Bitwise Operators
The difference between Turbo C and other advanced languages is that it fully supports bitwise operators. This is somewhat similar to the bit operation of assembly language.
The bitwise operators in Turbo C are:
━━━━━━━━━━━━━━━━━━━━━━━━━━━━
operator function
────────────────────────────
& Bit Logic and
| Bit logic or
^ Bit logical xor or
-bit logic counter
>> Move Right
<< Move Left
━━━━━━━━━━━━━━━━━━━━━━━━━━━━
Bitwise operations are the detection, setting, or shift of the actual bits in a byte or word, which apply only to character and integer variables and their variants, and are not applicable to other data types.
The result of relational and logical operation expressions can only be 1 or 0. The result of bitwise operations can be a value other than 0 or 1.
Be aware of the difference between bitwise and logical operators, for example, if x=7, the X&&8 value is true (two non-0 values are still not 0), and the X&8 value is 0.
The shift operator ">>" and "<<" refers to moving each digit in a variable to the right or left, usually in the form of:
Move right: Variable name >> number of bits shifted
Move left: Variable name << number of bits shifted
After the shift, the bits at one end are "squeezed out" and the vacated bits on the other end are filled with 0, so the shift in Turbo C is not circular.
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