General c++ question - GameCreators Forum

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tripleF

17

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Joined: 4th Jun 2006

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Posted: 20th Jul 2006 15:51

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How do i initialize a string array inside a class? This dosent seem to work and iv tryed other ways to

+ Code Snippet

#include "DarkSDK.h"
#include <string>
using namespace std;


class Menu
{
	
	string menu1[4];
public:
	Menu();
	~Menu();
	void display();
};
Menu::Menu()
{
        menu1={"Options","Start","Stop"};  
}
Menu::~Menu()
{
}
void Menu::display()
{
	dbText(10,10,const_cast<char*>(menu1[0].c_str()) );
}

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tripleF

17

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Joined: 4th Jun 2006

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Posted: 20th Jul 2006 19:31

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I cant even get this to work.But it was in an example in a c++ tutorial

+ Code Snippet

#include "DarkSDK.h"
#include <string>
using namespace std;

string name;

name = "mark";

I get these errors
: error C2371: 'name' : redefinition; different basic types
: error C2440: 'initializing' : cannot convert from 'const char [5]' to 'int'
: error C2501: 'name' : missing storage-class or type specifiers

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IanM

Retired Moderator

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Joined: 11th Sep 2002

Location: In my moon base

Posted: 20th Jul 2006 22:16

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In answer to your first post, you can't. There is no automatic conversion of an array of char* to an array of strings. I don't think that there is any way to do it that looks good, except this way:

+ Code Snippet

class Menu
{

        string menu1[4];
public:
        Menu();
        ~Menu();
};
Menu::Menu()
{
        menu1[0] = "Options";
        menu1[1] = "Start";
        menu1[2] = "Stop";
}
Menu::~Menu()
{
}

The answer to your second post is that your code is wrong ... or the tutorial is wrong (find a decent one - 'Thinking in C++' is a free book available off the net). You can only assign a char* to a string as a part of the construction, or within a function.

So, either this:

+ Code Snippet

#include "DarkSDK.h"
#include <string>
using namespace std;

string name = "mark";

or this:

+ Code Snippet

#include "DarkSDK.h"
#include <string>
using namespace std;

string name;

int main()
{
  name = "mark";
}

For free Plug-ins and source code http://www.matrix1.demon.co.uk

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tripleF

17

Years of Service

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Joined: 4th Jun 2006

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Posted: 21st Jul 2006 01:17

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thnx for answer downloading the book now

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