C++ coding problem..help!

[rayda]

this is my coding:

const int MAX_LIST=50;
typedef ListItemType;

class List
{
public:
	List();
	bool isEmpty() const;
	int getLength() const;
	
	void insert(int index, const ListItemType& newItem,bool& success);
	void remove(int index, bool& success);
	void retrieve(int index, ListItemType& dataItem,bool& success) const;

private:
	ListItemType items[MAX_LIST];
	int sizr;
	int translate(int index) const;
};

#include "ListA.h"
List::List() : size(0)
{
}

bool List::isEmpty() const
{
	return size == 0;
}

int List::getLength() const
{
	return size;
}

void List::insert(int index, const ListItemType& newItem, bool& success)
{
	success=(index>=1)&&(index<=size+1)&&(size<MAX_LIST);
	if(success)
	{
		for(int pos=size; pos>=index; --pos)
			items[translate(pos+1)]=items[translate(pos)];
		items[translate(index)]=newItem;
		++size;
	}
}

void List::remove(int index, bool& success)
{
	success=(index>=1)&&(index<=size);
	if(success)
	{
		for(int fromPosition=index+1; fromPosition<=size;++fromPosition)
			items[translate(from position-1)]=items[translate(fromPosition)];
		--size;
	}
}

void List::retrieve(int index, ListItemType& dataItem, bool& success) const
{
	success=(index>=1)&&(index<=size);
	if(success)
		dataItem=items[translate(index)];
}

int List::translate(int index)const
{
	return index-1;
}

#include "ListA.h"
int main()
{
	List aList;
	ListItemType dataItem;
	bool success;

	aList.insert(1,20,success);
	aList.remove(1,success);
	aList.retrieve(1,dataItem,success);
	int translate(1);
	return (0);
}

i get an error during compling.
the error shown is:cannot open include file 'ListA.h'.No such file or directory.

why??:confused::confused:

 

[Sniper]

hi rayda

Can you not remove the part where you include the ListA.h file, in this case

#include "ListA.h"

Or if don't you need the ListA file, create it, I think the header files (.h) are used to define the class and what methods etc it will contain.

 

[rayda]

if i need the ListA.h..
how to create it?..

 

[Sniper]

what software are you using to code?

just create a new file, then select to save as "ListA.h"

 

[thomas234]

Wont ListA.h contain some of the code that you need? Have you followed a tutorial for this code?

 

[Sniper]

true, I think it needs the method definitions or something.

edit: here is a nice introduction Introduction to C++ Header Files