Derived classes question

[mysiarobin1987]

I'm working on an assignment for my C++ class where we have to create two derived classes: Auto and Transmission from base class of Inventory. I am done creating the header file for Auto class, however, I am now having issues with my Transmission class. I copied and pasted the code from the Auto class into the Transmission class, and basically just changed Auto to Transmission, and I am getting the errors "string does not name type" and "string has not been declared". I am not getting these errors in the Auto class, but I am in the Transmission class. I've been working on it for the past hour to try to come up with a solution and would like any help :-). Thanks in advance!

PS: The only difference between the Auto and Transmission classes was that I had to change manufacturer to vendor, which is what is giving me the problems, the string vendor.

//Auto class header file (the one that is working)
#ifndef H_AUTO
#define h_AUTO
#include <string>
#include <iomanip>
class Auto : public Inventory

{

string manufacturer;

public:

Auto(int q, int r, double p, string d, string man);

~Auto();

string getManufacturer();

void print();

};

//definition for class Auto

Auto::Auto(int anyQuan, int anyReorder, double anyPrice, string anyDesc, string anyManufacturer)

:Inventory(anyQuan, anyReorder, anyPrice, anyDesc)

{

manufacturer = anyManufacturer;

}

void Auto::print()

{

cout << setiosflags(ios::fixed);

cout<<setprecision(2); //display decimal point to 2 place after decimal

cout << "Quantity Is: " << getQuant() << endl;

cout << "Re-Order Number Is: " << getReorder() << endl;

cout << "The Price of Each Item Is: " << getPrice() << endl;

cout << "Description: " << getDescrip() << endl;

cout << "Manufacturer: " << manufacturer << endl;

}

string Auto::getManufacturer()

{

return manufacturer;

}

Auto::~Auto()

{
}
#endif

//Transmission class header file (the one that is not working)
  #ifndef H_TRANSMISSION
#define h_TRANSMISSION
#include <string>
#include <iomanip>
class Transmission : public Inventory

{
	
string vendor; //Here is where the compiler says I am getting the problem

public:

Transmission(int q, int r, double p, string d, string ven);

~Transmission();

string getVendor();

void print();

};

//definition for class Transmission

Transmission::Transmission(int anyQuan, int anyReorder, double anyPrice, string anyDesc, string anyVendor)
:Inventory(anyQuan, anyReorder, anyPrice, anyDesc)
{

vendor = anyVendor;

}

void Transmission::print()

{

cout << setiosflags(ios::fixed);

cout<<setprecision(2); //display decimal point to 2 place after decimal

cout << "Quantity Is: " << getQuant() << endl;

cout << "Re-Order Number Is: " << getReorder() << endl;

cout << "The Price of Each Item Is: " << getPrice() << endl;

cout << "Description: " << getDescrip() << endl;

cout << "Vendor: " << vendor << endl;

}

string Transmission::getVendor()

{

return vendor;

}

Transmission::~Transmission()

{
}
#endif 

[coder777]

You need to include the header where you find the class Inventory as well.

Without using namespace std; you need to prepend std:: like std::string vendor;

[keskiverto]

#ifndef H_AUTO
#define h_AUTO

#endif // matches #ifndef H_AUTO 

First, note that H_AUTO != h_AUTO. Treat macro names as case sensitive.


Second, neither header uses the std:: scope in any form. Therefore, the code that includes there headers makes std scope visible for one of them.

These are headers. Use explicit std:: in them (std::string, std::cout, etc).

Hint, you could add using std::cout; using std::endl to lines 39 and 106 so that within those function scopes you could still use plain cout and endl. (Although, I'd replace endl with '\n').

[mysiarobin1987]

Thank you all ! I got it to work! I appreciate your help!