- Basic Objective-C
- Objective-C - Home
- Objective-C - Overview
- Objective-C - Environment Setup
- Objective-C - Program Structure
- Objective-C - Basic Syntax
- Objective-C - Data Types
- Objective-C - Variables
- Objective-C - Constants
- Objective-C - Operators
- Objective-C - Loops
- Objective-C - Decision Making
- Objective-C - Functions
- Objective-C - Blocks
- Objective-C - Numbers
- Objective-C - Arrays
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- Objective-C - Structures
- Objective-C - Preprocessors
- Objective-C - Typedef
- Objective-C - Type Casting
- Objective-C - Log Handling
- Objective-C - Error Handling
- Command-Line Arguments
- Advanced Objective-C
- Objective-C - Classes & Objects
- Objective-C - Inheritance
- Objective-C - Polymorphism
- Objective-C - Data Encapsulation
- Objective-C - Categories
- Objective-C - Posing
- Objective-C - Extensions
- Objective-C - Protocols
- Objective-C - Dynamic Binding
- Objective-C - Composite Objects
- Obj-C - Foundation Framework
- Objective-C - Fast Enumeration
- Obj-C - Memory Management
- Objective-C Useful Resources
- Objective-C - Quick Guide
- Objective-C - Useful Resources
- Objective-C - Discussion
Bitwise Operators in Objective-C
The Bitwise operators supported by Objective-C language are listed in the following table. Assume variable A holds 60 and variable B holds 13, then −
Operator | Description | Example |
---|---|---|
& | Binary AND Operator copies a bit to the result if it exists in both operands. | (A & B) will give 12, which is 0000 1100 |
| | Binary OR Operator copies a bit if it exists in either operand. | (A | B) will give 61, which is 0011 1101 |
^ | Binary XOR Operator copies the bit if it is set in one operand but not both. | (A ^ B) will give 49, which is 0011 0001 |
~ | Binary Ones Complement Operator is unary and has the effect of 'flipping' bits. | (~A ) will give -61, which is 1100 0011 in 2's complement form. |
<< | Binary Left Shift Operator. The left operands value is moved left by the number of bits specified by the right operand. | A << 2 will give 240, which is 1111 0000 |
>> | Binary Right Shift Operator. The left operands value is moved right by the number of bits specified by the right operand. | A >> 2 will give 15, which is 0000 1111 |
Example
Try the following example to understand all the bitwise operators available in Objective-C programming language −
#import <Foundation/Foundation.h> int main() { unsigned int a = 60; /* 60 = 0011 1100 */ unsigned int b = 13; /* 13 = 0000 1101 */ int c = 0; c = a & b; /* 12 = 0000 1100 */ NSLog(@"Line 1 - Value of c is %d\n", c ); c = a | b; /* 61 = 0011 1101 */ NSLog(@"Line 2 - Value of c is %d\n", c ); c = a ^ b; /* 49 = 0011 0001 */ NSLog(@"Line 3 - Value of c is %d\n", c ); c = ~a; /*-61 = 1100 0011 */ NSLog(@"Line 4 - Value of c is %d\n", c ); c = a << 2; /* 240 = 1111 0000 */ NSLog(@"Line 5 - Value of c is %d\n", c ); c = a >> 2; /* 15 = 0000 1111 */ NSLog(@"Line 6 - Value of c is %d\n", c ); }
When you compile and execute the above program, it produces the following result −
2013-09-07 22:11:51.652 demo[30836] Line 1 - Value of c is 12 2013-09-07 22:11:51.652 demo[30836] Line 2 - Value of c is 61 2013-09-07 22:11:51.652 demo[30836] Line 3 - Value of c is 49 2013-09-07 22:11:51.652 demo[30836] Line 4 - Value of c is -61 2013-09-07 22:11:51.652 demo[30836] Line 5 - Value of c is 240 2013-09-07 22:11:51.652 demo[30836] Line 6 - Value of c is 15
objective_c_operators.htm
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