operator overloading in c++

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OPERATOR OVERLOADING

Disclaimer: This presentation is prepared by trainees of baabtra as a part of mentoring program. This is not official document of baabtra –Mentoring PartnerBaabtra-Mentoring Partner is the mentoring division of baabte System Technologies Pvt . Ltd

WHAT IS OPERATOR???An operator is a symbol that tells the compiler to perform specific mathematical or logical manipulations. Some operators are….

• Arithmetical operators• Logical operators• Relational operators

OVERLOADINGMore than one definition for a function name or an operator in the same scope, which is called overloading.• Function overloading• Operator overloading

Operator overloading

The process of making an operator to exhibit different behaviours in different instances is known as operator overloading.Syntax:-

operator([parameters]) { Statements }

operator([parameters]) { Statements }

Benefi ts…..

• Perform different operations on the same operands.• It makes code much more

readable. • Easily access the objects to

perform any operations .

Example#include <iostream>using namespace std;class temp{ private: int count; public: temp() { count=25; } void operator --() { count--; } void Display() { cout<<"Count: "<<count; }};main(){ temp t; --t; t.Display();}

OUTPUT Count:24

Function overloading

Using a single function name to perform different types of tasks is known as function overloading.

Example:#include<iostream>using namespace std;class shape{public:float area(double a){ float circle_area; circle_area=3.14*(a*a); return circle_area;}int area(int a){ int squire_area; squire_area=a*a; return squire_area;}int area(int a,int b){ int rectangle_area; rectangle_area=a*b; return rectangle_area;}};

main(){ double circlee; int squiree,rectanglee; shape object; cout<<"Area of Circle:"; circlee=object.area(5.00); cout<<circlee; cout<<"\nArea of squire:"; squiree=object.area(4); cout<<squiree; cout<<"\nArea of rectangle:"; rectanglee=object.area(5,6); cout<<rectanglee;}

Output:Area of Circle:78.5Area of squire:16Area of rectangle:30

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