Answers for "operator in class c++"

operator c++

Common operators
assignment | increment | arithmetic |  logical | comparison | member | other
		   | decrement |            |		   |		    | access |
-----------------------------------------------------------------------------                            
  a = b    |    ++a    |     +a	    |	 !a	   |   a == b   |  a[b]  | a(...)
  a += b   |	--a	   |     -a		|  a && b  |   a != b   |   *a   |  a, b
  a -= b   |	a++	   |   a + b	|  a || b  |   a < b    |   &a   |  ? :
  a *= b   |	a--	   |   a - b	|	       |   a > b    |  a->b  |
  a /= b   |		   |   a * b	|	       |   a <= b	|  a.b   |
  a %= b   |		   |   a / b	|		   |   a >= b	|  a->*b |
  a &= b   |		   |   a % b	|		   |   a <=> b	|  a.*b  |
  a |= b   |		   |     ~a		|		   |		    |		 |
  a ^= b   |		   |   a & b	|		   |   		    |		 |
  a <<= b  |		   |   a | b	|		   |			|		 |
  a >>= b  |		   |   a ^ b	|		   |			|		 |     
   		   |		   |   a << b	|		   |			|		 |  
     	   |		   |   a >> b	|		   |			|		 |

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;
}

operator in c++

2x in c++