Lecture 11 bitwise_operator
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This document discusses bitwise operators in C programming. It explains that bitwise operators manipulate data at the bit level and work on integer and character data types. The document defines and provides examples for the ones' complement (~), shift right (>>), shift left (<<), bitwise AND (&), bitwise OR (|), and bitwise exclusive OR (^) operators. It demonstrates how each operator works by showing the result of applying them to sample bit values.
Lecture 11 bitwise_operator
- 2. ● An operator used for manipulation of data at bit level ● It is used for testing bits, shifting them right or left ● It works on integer and character data type ● It is not applied to float or double www.eshikshak.co.in
- 3. Operator Meaning ~ One’s compliment >> Shift right << Shift left & Bitwise AND | Bitwise OR ^ Bitwise exclusive OR www.eshikshak.co.in
- 4. ● All the 1’s present in the number are changed to 0’s and all 0’s are changed to 1’s ● Example 1’s complement of 1101 = 0010 1’s complement of 1010 = 0101 www.eshikshak.co.in
- 5. main() { int j,k; j=12; k=~j; printf(“One’s complement of %d is”,j); showbits(k); } Example One’s complement of 12 is 0011 www.eshikshak.co.in
- 6. ● It is represent by >> ● It shifts each bit in operand to the right ● Example ch >> 1 This will shift all bits in ch one place to the right ch >> 5 This will shift all bits in ch five places to the right www.eshikshak.co.in
- 7. main() { int j,k,i; i=12; for(j=0;j<4;j++) { k = i >> j; printf(“%d right shift %d gives”,i,j); showbits(k); } } Output 12 right shift 0 gives 1100 12 right shift 1 gives 0110 12 right shift 2 gives 0011 12 right shift 3 gives 0001 www.eshikshak.co.in
- 8. ● It is represent by << ● It shifts each bit in operand to the left ● Example ch << 1 This will shift all bits in ch one place to the left ch << 5 This will shift all bits in ch five places to the left www.eshikshak.co.in
- 9. main() { int j,k,i; i= 3; for(j=0;j<4;j++) { k = i << j; printf(“%d right shift %d gives”,i,j); showbits(k); } } Output 12 right shift 0 gives 0011 12 right shift 1 gives 0001 12 right shift 2 gives 0000 12 right shift 3 gives 0000 www.eshikshak.co.in
- 10. ● & operator operates on two operands ● This operator will compared two operands on bit-by-bit basis ● Both the operands must be of same type (either char or int) ● & and && are different operator, && is logical AND operator whereas & is Bitwise AND operator 1st Bit 2nd Bit 1st & 2nd Bit 0 0 0 0 1 0 1 0 0 1 1 1 www.eshikshak.co.in
- 11. ● The uses of bitwise AND operator a) It is used whether a particular bit in a number is ON or OFF b) It is used to turn OFF a particular bit in a number www.eshikshak.co.in