Question

#include <iostream>
#include <string>
using namespace std;

class BookData
{
    string Title;
    int Qty;
public:
    void setTitle(string in_title) { Title = in_title;}
    string setQty(int in_qty) { Qty = in_qty; }
    string getTitle() { return Title; }
    int getQty() { return Qty; }
};

int main()
{
    BookData book;
    book.setTitle("Starting Out with C++");
    book.setQty(10);
    cout << "Title is " << book.getTitle() << ".\n\n";
    cout << "Quantity is " << book.getQty() << ".\n\n"; 
    return 0;
}

When I compile all I get is an empty console. Any suggestions?

Answer 1

Change the return type of BookData::setQty() from string to void.

Without this change, it should still work fine. On my Linux machine, it crashes when setQty() is called with a return type of string and no string being returned.