"operator = overloading c++" Code Answer's
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operator overloading in c++
ostream &operator<<(ostream &output, const MyClass &myObject)
{
output << "P : " << myObject.property;
return output;
}
c++ operator overloading
// money.h -- define the prototype
class Money
{
public:
Money & operator += (const Money &rhs);
}
// money.cpp -- define the implementation
Money& Money :: operator += (const Money &rhs)
{
// Yadda Yadda
return *this;
}
c++ overloaded == operator
#include <iostream>
#include <string>
class Car
{
private:
std::string m_make;
std::string m_model;
public:
Car(const std::string& make, const std::string& model)
: m_make{ make }, m_model{ model }
{
}
friend bool operator== (const Car &c1, const Car &c2);
friend bool operator!= (const Car &c1, const Car &c2);
};
bool operator== (const Car &c1, const Car &c2)
{
return (c1.m_make== c2.m_make &&
c1.m_model== c2.m_model);
}
bool operator!= (const Car &c1, const Car &c2)
{
return !(c1== c2);
}
int main()
{
Car corolla{ "Toyota", "Corolla" };
Car camry{ "Toyota", "Camry" };
if (corolla == camry)
std::cout << "a Corolla and Camry are the same.\n";
if (corolla != camry)
std::cout << "a Corolla and Camry are not the same.\n";
return 0;
}
c++ over load operator
// This will substract one vector (math vector) from another
// Good example of how to use operator overloading
vec2 operator - (vec2 const &other) {
return vec2(x - other.x, y - other.y);
}
what is operator overloading in c++
#include <iostream>
using namespace std;
class Box {
public:
double getVolume(void) {
return length * breadth * height;
}
void setLength( double len ) {
length = len;
}
void setBreadth( double bre ) {
breadth = bre;
}
void setHeight( double hei ) {
height = hei;
}
// Overload + operator to add two Box objects.
Box operator+(const Box& b) {
Box box;
box.length = this->length + b.length;
box.breadth = this->breadth + b.breadth;
box.height = this->height + b.height;
return box;
}
private:
double length; // Length of a box
double breadth; // Breadth of a box
double height; // Height of a box
};
// Main function for the program
int main() {
Box Box1; // Declare Box1 of type Box
Box Box2; // Declare Box2 of type Box
Box Box3; // Declare Box3 of type Box
double volume = 0.0; // Store the volume of a box here
// box 1 specification
Box1.setLength(6.0);
Box1.setBreadth(7.0);
Box1.setHeight(5.0);
// box 2 specification
Box2.setLength(12.0);
Box2.setBreadth(13.0);
Box2.setHeight(10.0);
// volume of box 1
volume = Box1.getVolume();
cout << "Volume of Box1 : " << volume <<endl;
// volume of box 2
volume = Box2.getVolume();
cout << "Volume of Box2 : " << volume <<endl;
// Add two object as follows:
Box3 = Box1 + Box2;
// volume of box 3
volume = Box3.getVolume();
cout << "Volume of Box3 : " << volume <<endl;
return 0;
}
operator = overloading c++
inline bool operator==(const X& lhs, const X& rhs){ /* do actual comparison */ }
inline bool operator!=(const X& lhs, const X& rhs){ return !(lhs == rhs); }
Source: en.cppreference.com
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