Question

I have an assignment that my teacher has told us to use this in the .h file:

    operator string();

and we can not deviate from it in any way.

So in my .cpp file I have:

   Currency::operator string(){
 stringstream output;
 output<<"$";
 output<<dollars;//Why does this return garbage for money1+money2??
 output<<".";
 output<<cents;
 string outputstring = output.str();
 return outputstring;
   }

But when I do string(money1+money2) it returns garbage, it works fine when I just do ‘string(money1)`. I am wondering what I am doing wrong.

Any help will be great.

Here is my overloaded + operator code:

Currency& Currency::operator+(const Currency &rhs){
Currency temp;
temp.dollars = dollars + rhs.dollars;
temp.cents = cents + rhs.cents;
temp.simplify();
return temp;
}

Notes: I have run the debugger and there is no issue with the overloaded + operator; it returns what it should.

Answer 1

Here is my overloaded + operator code:

You are returning a local variable by reference. Never do this.

You should be returning it by value:

Currency Currency::operator+(const Currency &rhs)