PLEASE HELP!! with strings, vectors.

[marth2010]

...

[TwilightSpectre]

You haven't defined the function "Stock::getPrice()", only declared it, so the linker can't find it. Also, you can't create an object of "nsadaq()" (with the parentheses), as that implies a dereferenced function. Try getting rid of the parantheses attached to "nsadaq" on lines 65-67.

[marth2010]

...

[marth2010]

...

[TwilightSpectre]

Again, you are not defining those functions specified. Here is how I would define both of them:

class Stock {
    public:
        double getPrice(void) const;
        // ...
    private:
        // ...
};

class Xchange : public Stock {
    public:
        Xchange() : Stock("", 0.0) {}  // Initialize to null values
        // ...
    private:
        // ...
};

double Stock::getPrice(void) const {
    return price;
}