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Bit wise operators in C:
- These operators are used to perform bit operations. Decimal values are converted into binary values which are the sequence of bits and bit wise operators work on these bits.
- Bit wise operators in C language are & (bitwise AND), | (bitwise OR), ~ (bitwise OR), ^ (XOR), << (left shift) and >> (right shift).
Truth table for bit wise operation Bit wise operators
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x
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y
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x|y
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x & y
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x ^ y
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Operator_symbol
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Operator_name
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|
|
0
|
0
|
0
|
0
|
0
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&
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Bitwise_AND
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|
|
0
|
1
|
1
|
0
|
1
|
|
|
Bitwise OR
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|
|
1
|
0
|
1
|
0
|
1
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~
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Bitwise_NOT
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|
|
1
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1
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1
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1
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0
|
^
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XOR
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|
|
<<
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Left Shift
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||||||
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>>
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Right Shift
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||||||
- Consider x=40 and y=80. Binary form of these values are given below.
x = 00101000
y= 01010000
- All bit wise operations for x and y are given below.
x&y = 00000000 (binary) = 0 (decimal)
x|y = 01111000 (binary) = 120 (decimal)
~x =1111111111111111111111111111111111111111111111111111111111010111
.. ..= -41 (decimal)
x^y = 01111000 (binary) = 120 (decimal)
x << 1 = 01010000 (binary) = 80 (decimal)
x >> 1 = 00010100 (binary) = 20 (decimal)
Note:
- Bit wise NOT : Value of 40 in binary is 0000000000000000000000000000000000000000000000000000000000101000. So, all 0’s are converted into 1’s in bit wise NOT operation.
- Bit wise left shift and right shift : In left shift operation “x << 1 “, 1 means that the bits will be left shifted by one place. If we use it as “x << 2 “, then, it means that the bits will be left shifted by 2 places.
Example program for bit wise operators in C:
- In this example program, bit wise operations are performed as shown above and output is displayed in decimal format.
#include <stdio.h>
int main()
{
int m=40,n=80,AND_opr,OR_opr,XOR_opr,NOT_opr ;
AND_opr = (m&n);
OR_opr = (m|n);
NOT_opr = (~m);
XOR_opr = (m^n);
printf("AND_opr value = %dn",AND_opr );
printf("OR_opr value = %dn",OR_opr );
printf("NOT_opr value = %dn",NOT_opr );
printf("XOR_opr value = %dn",XOR_opr );
printf("left_shift value = %dn", m << 1);
printf("right_shift value = %dn", m >> 1);
}
Output:
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AND_opr value = 0
OR_opr value = 120 NOT_opr value = -41 XOR_opr value = 120 left_shift value = 80 right_shift value = 20 |
……
Continue on types of C operators:
- Click on each operators name below to display example programs.
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S.no
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Types of Operators
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Description
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1
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Arithmetic_operators | These are used to perform mathematical calculations like addition, subtraction, multiplication, division and modulus |
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2
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Assignment operators | These are used to assign the values for the variables in C programs. |
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3
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Relational operators | These operators are used to compare the value of two variables. |
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4
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Logical operators | These operators are used to perform logical operations on the given two variables. |
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5
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Bit wise operators | These operators are used to perform bit operations on given two variables. |
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6
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Conditional (ternary) operators | Conditional operators return one value if condition is true and returns another value is condition is false. |
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7
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Increment/decrement operators | These operators are used to either increase or decrease the value of the variable by one. |
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8
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Special operators | &, *, sizeof( ) and ternary operators |
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