Polymorphism, Interfaces Operator Overloading

Feb 15, 2013

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2. One Ring to rule them all, One Ring to find them, One Ring to bring them all and in the darkness bind them.John Ronald Reuel TolkienGeneral propositions do not decide concrete cases.Oliver Wendell Holmes. 3. A philosopher of imposing stature doesn't think in a vacuum. Even his most abstract

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Polymorphism, Interfaces Operator Overloading

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Operator Overloading

Operator Overloading Fundamentals Methods (class members & friend functions) Binary operators Stream operators Unary operators Pre & post increment & decrement Fundamentals Operator overloading = using the same operator for different data types

985 views • 21 slides

Operator Overloading

Operator Overloading. CS 308 – Data Structures. What is operator overloading?. Changing the definition of an operator so it can be applied on the objects of a class is called operator overloading. To overload an operator, we need to write a function for the operator we are overloading.

527 views • 9 slides

Operator Overloading

Operator Overloading. CSCE 121 J. Michael Moore. Based on Slides created by Carlos Soto. Operators. Assignment: = Arithmetic: +, -, *, /, % Compound assignment: +=, -=, *=, /=, %= Increment/decrement: ++, -- Logical: !, &&, || Comparison: ==, !=, <, >, <=, >= Other: <<, >>, etc.

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Operator Overloading

Department of Computer and Information Science, School of Science, IUPUI. Operator Overloading. Dale Roberts, Lecturer Computer Science, IUPUI E-mail: droberts@cs.iupui.edu. Operator Overloading .

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Operator Overloading

Operator Overloading. Presented By: Nazia Hossain Lecturer, Stamford University Bangladesh. General Form. Overloading the assignment operator: Myclass & operator=(const Myclass & rhs ); Assume b and c are Myclass type B.operator =(c). Rhs (right hand side).

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Operator Overloading

Operator Overloading. Chapter 8. Operator Overloading. Operator overloading gives the opportunity to redefine C++ Operator overloading refers to redefine C++ operators such as +,<,>, additional meanings when they are applied to user defined data types a = b + c d3.addobjects(d1 , d2)

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Operator overloading

Operator overloading. redefine the operations of operators +  * / << >> ( ) [ ] …, 參考 p. 286 eg. Complex number Complex A, B, C; C = A.add(B); // use member function add C = A + B; // overload the operator + 格式: ( function prototype)

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Operator Overloading

Operator Overloading. What is operator overloading? Most predefined operators (arithmetic, logic, etc.) in C++ can be overloaded when applied to objects of a class by providing an operator function. Examples of those that can not be overloaded are ::, . , and ?:

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Operator Overloading

Operator Overloading. Operator Overloading. Binary operators Unary operators Conversion Operators Proxy Classes bitset example Special operators Indexing Pre-post increment/decrement Smart pointers (operator ->) Function call. Complex Numbers. A Canonical Example Rational is another

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Operator Overloading

Operator Overloading. Operator Overloading More than just Syntactic Sugar. Binary operators Unary operators Conversion Operators Proxy Classes (simulating a reference) bitset example Special operators Indexing Pre-post increment/decrement Function call.

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Operator Overloading

Operator Overloading. Back to Fractions. Implementing an Object. We’ve talked at length about object-orientation. We’ve looked heavily at encapsulation and related concerns. We’ve started to implement a data structure for fractions.

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OPERATOR OVERLOADING

OPERATOR OVERLOADING. Closely related to function overloading is - operator overloading. In C++ you can overload most operators so that they perform special operations relative to classes that you create.

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Operator Overloading

EECS 230 Lectures Series. Operator Overloading. Ying Wu Electrical Engineering & Computer Science Northwestern University yingwu@ece.northwestern.edu. Let’s program. Create a CMatrix class Data members? Get inputs? Print it out? Arithmetic operations?. 1 st version. class CMatrix

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Operator Overloading

Operator Overloading. Strong Suggestion : Go over the Array class example in Section 8.8 of your text. (You may ignore the Array copy constructor for now.). Review -- Function Signatures. A function signature is what the compiler and linker use to identify a function.

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Operator Overloading

Operator Overloading. class complex { int real, img; public: complex add() ; complex sub() ; complex& assign(); void show() ; };. // + // - // = // <<. Operator Overloading. main() { complex c1(5,3), c2(2,2) ; c1.assign(c1.add(c2)) ; // c1 = c1 + c2 ;

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Operator Overloading

Operator Overloading. Syntax. The general syntax is: [friend] returntype operator <operator symbol> ( <parameters> ) { <statements>; }. Syntax. The number of arguments in the overloaded operator’s argument list depends on two factors:

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Operator Overloading

CS 222 Object Oriented Programming Using C++. Operator Overloading. Contents. What is Operator Overloading How to Overload Restrictions on Operator Overloading Unary and binary Operator Overloading Overloading Inserters and Extractors. What is Operator Overloading.

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Operator Overloading

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