用char c ++重载运算符

Question

I am working on a homework for class on overloading operators. The problem I am having is with a char.

RetailItem &RetailItem::operator=(const RetailItem &objRetail) {    
    this->description = objRetail.getDescription();
    this->unitsOnHand = objRetail.getUnitsOnHand();
    this->price = objRetail.getPrice();
    return *this;
}

I am getting a message on Visual Studio:

a value of type const char * cannot be assigned to an entity of type char * .

I have done some research and not found anything. If anyone can help, thanks in advance.

EDIT:

I will add the getDescription function to provide more information. Also the description is a *char .

const char *RetailItem::getDescription() const{

    return description;
}

Answer 1

Probably RetailItem::description is char* and RetailItem::getDescription casts this char* to const char* and returns that. You can add const qualifiers implicitly, but you cannot remove them the same way in the assignment:

this->description = objRetail.getDescription();

And you probably shouldn't . This will make two RetailItem s referring to the same resource without managing its lifetime properly, as well as not freeing the memory held previously (if it is indeed a pointer to a dynamically allocated array).

This boils down to: you should prefer using std::string over arrays.

Answer 2

Reason might be mismatch between data type of "member variables" which you used in the class and the return values of the function.

const char *RetailItem::getDescription() const{

    return description;
}

Remove const before function , keep it char *RetailItem::getDescription() const only .It should work