Need help converting an array to a vector

This is my current coding, in my header file


#ifndef _ADDRESSBOOK
#define _ADDRESSBOOK

const int MAXADDRESS = 25;

struct PERSON
{
char fName[25];
char lname[25];
char Address[100];

};

class addressBook
{
private:
PERSON people[10];
public:
addressBook();
addressBook(char *fName, char*lname, char *add);
addressBook(PERSON a);
addressBook(PERSON init[], int count);
bool addPerson(const PERSON &p);
bool getPerson(PERSON &p);
bool findPerson(char *lastName, PERSON &p);
bool findPerson(char *lastName, char *firstName, PERSON &p);
void bubbleSort();
void printBook();

};




#endif



I have to change this the
"private:
PERSON people[10];"
to a vector, so I tried declaring it like this

vector <PERSON> people;

but i keep getting error messages saying stuff like this

1>e:\c++ level 2\address book\address book\addressbook.h(17) : error C2143: syntax error : missing ';' before '<'
1>e:\c++ level 2\address book\address book\addressbook.h(17) : error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
1>e:\c++ level 2\address book\address book\addressbook.h(17) : error C2238: unexpected token(s) preceding ';'
1>e:\c++ level 2\address book\address book\addressbook.cpp(20) : error C2065: 'people' : undeclared identifier


but that was how my teacher showed me I declare a vector. well actually, he showed me while using "vector <int> x;" but he said that I could use a struct as a base type..I think. Can anybody tell me why I'm getting these errors?

To use the vector class you'll need to include the 'vector.h' header class:

Code:

---

#include <vector>

---

In addition you need to specify the 'std' namespace, either like this:

Code:

---

using namespace std;

---

or like this:

Code:

---

std::vector<PERSON> people;

---

- petter

Quote:

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Originally Posted by bf2loser

Code:

---

#ifndef _ADDRESSBOOK
#define _ADDRESSBOOK
//...
#endif

---

---

Technically speaking, your naming convention isn't "valid".
The C++ standard reserves such names (underscore followed by an upper case letter) for the implementation.
While it's unlikely that your naming scheme will cause a collision, it's still something that you can avoid altogether.

Quote:

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Originally Posted by wildfrog

In addition you need to specify the 'std' namespace, either like this:

Code:

---

using namespace std;

---

---

OP, it's worthwhile to mention that it's often a very bad idea to include this in a header file.
You're forcing this on your users -- namespace pollution is usually not a good thing. =)

please, in the future, post your code in code tags :thumb:

after you have

Code:

---

#include <vector>

---

it is possible that your problem is very simple.
some compilers do not like it when you leave a space between 'vector', and the first '<', and will give you errors similar to those you have. try taking the space out like how wildfrog has in his above post:

Code:

---

vector<PERSON> people;

---

and see if that clears up the errors, otherwise, post the exact code that is giving you problems, in code tags ;)

Quote:

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Originally Posted by Mal Reynolds

some compilers do not like it when you leave a space between 'vector', and the first '<', and will give you errors similar to those you have.

---

Can you name at least one? I know older MS compilers had trouble with these things:

Code:

---

T <Y<U>> t; //In reference to operator>>

---

I've never heard of what you described, though.

ok, i cannot find where I originally heard that, so I am sorry that i am not able to substantiate that idea, however...

as I was looking for any information on it, I did not find a single code example that had a space between them... though, as i'm sure you are aware, you could easily argue that that is just a coincidence due to normal coding conventions. so... though i cannot substantiate that idea, it may still be worth a try.

edit: on closer look, it may very well just be the absence of the <vector> header that is causing those errors...