This document discusses operator overloading in C#. It defines operator overloading as extending the functionality of operators to user-defined types. There are two types of overloading: method overloading and operator overloading. Operator overloading allows operators to work with user-defined types by defining the behavior for operators like +, -, *, / etc. for those types. There are rules for operator overloading, including that only predefined operators can be overloaded and the natural and overloaded meanings must be the same. Unary and binary operator overloading are discussed as ways to overload operators that take one operand and two operands respectively. The benefits of operator overloading are that it provides additional capabilities for operators to work on user-defined data types.

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Operator overloading
 What is Overloading?
 Types of Overloading.
 Operator Overloading.
 Types of Operator Overloading.

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What is Overloading?
Two Type is
1. Method Overloading
2. Operator Overloading

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Overloading

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Cont..
Rules for Operator Overloading
 Only Predefined Operator is Overloaded.
 Cannot Change Operator Template.
 Natural meaning and overloaded meaning is same.
 Must have a user defined operand.
Types of Operator Overloading.
 Unary Operator Overloading.
 Binary Operator Overloading.
Syntax
modifiers type operator op(arglist)
{
Method body//task defined
}

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Overloadable Operator Not Overloadable Operator
Category Operators Category Operators
BinaryArithmetic + * / - % Conditional && ||
UnaryArithmetic + - ++ -- Operators += -= *=
Binary Bitwise & | ^ << >> Compound /= %=
Unary Bitwise ! ~ true false assignment [] () ?:
Logical Operators == != >= < <== new
> Other operators sizeof

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Unary Operator Overloading

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Binary Operator Overloading
Binary Operators will work with two Operands. Examples of binary operators
include the Arithmetic Operators (+, -, *, /, %), Arithmetic Assignment operators
(+=, -+, *=, /+, %=) and Relational Operators etc. Overloading a binary operator
is similar to overloading a unary operator, except that a binary operator requires
an additional parameter.

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Benefits of Operator Overloading :
1. Operator Overloading provides additional capabilities to
C# operators when they are applied to user-defined data
types.
2. Operators may be considered as functions internal to the
compiler.

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