Question

I have a header file where i am declaring a class with a structure within it. Also i am declaring an overloading operator(!=, to compare structures) as member of this class. I am giving the definition of this operator in the cpp file. But i am not able to access the members of the structure

car.h

class car
{ 
int carsor;

struct model
{
    int id;

    int mode;

}prev,curr;

bool operator !=(const model& model1);

};

car.cpp

#include "car.h"

bool car::operator !=(const model& model1)
{
if((model1.id==model.id)&&(model1.mode==model.mode))
{
    return false;
}

else
{

    return false;
}
}

The error i get is this

Error   2   error C2275: 'car::model' : illegal use of this type as an expression   

how should i access the the structure members?

Answer 1

if((model1.id==model.id)&&(model1.mode==model.mode)) – model is the name of your class and not your object. Your object is accessible via this or you may omit it altogether inside the class.
Use if((model1.id==prev.id)&&(model1.mode==prev.mode)) to compare with prev or if((model1.id==next.id)&&(model1.mode==next.mode)) to compare with next.