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#1
August 8th, 2003, 09:47 PM
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Where to Put a Struct?
This is probably the easiest question you've ever seen, but I haven't used C++ in a while so I'm a little rusty.
Anyway, where do I put a struct declaration? I have a struct I want to declare that looks like this: Code:
struct UserData {
unsigned int userid;
unsigned int ip;
unsigned char month;
unsigned char day;
unsigned char year;
unsigned char hour;
unsigned char min;
unsigned char sec;
unsigned char numpages;
unsigned short entry;
unsigned short exit;
unsigned long bw;
unsigned short sbw;
unsigned short pgdloc;
unsigned char country;
unsigned char browser;
unsigned char os;
std::vector<unsigned short> pages;
}
I tried to put it into one of my files, like so: Code:
// ImportLog.cpp : implementation file
//
#include "stdafx.h"
#include "Log Analyzer.h"
#include "Log AnalyzerDlg.h"
#include "ImportLog.h"
#include <vector>
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
using std::vector;
struct UserData {
unsigned int userid;
unsigned int ip;
unsigned char month;
unsigned char day;
unsigned char year;
unsigned char hour;
unsigned char min;
unsigned char sec;
unsigned char numpages;
unsigned short entry;
unsigned short exit;
unsigned long bw;
unsigned short sbw;
unsigned short pgdloc;
unsigned char country;
unsigned char browser;
unsigned char os;
std::vector<unsigned short> pages;
}
/////////////////////////////////////////////////////////////////////////////
// CImportLog dialog
CImportLog::CImportLog(CWnd* pParent /*=NULL*/)
: CDialog(CImportLog::IDD, pParent)
{
//{{AFX_DATA_INIT(CImportLog)
m_Directions = _T("");
m_LogLocation = _T("");
//}}AFX_DATA_INIT
}
// continues . . .
But I got the error "'CImportLog::CImportLog' : constructors not allowed a return type". So, where am I supposed to put the struct? Also, if I declare it in one class, will I be able to use it in my other class (.cpp) files?
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#2
August 8th, 2003, 11:42 PM
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lol...what the heck does that struct have to do with the CImportLog constructor you posted? Or, are you far enough removed from C++ to think a constructor is a struct.
"where am I supposed to put the struct?" In a header file, and include it in any .cpp file that references the struct: Code:
my_struct.h
--------------
struct UserData
{
//members
}
functions.h
-------------
void my_function(int a);
void another_function(double b);
my_function.cpp
-------------------
#include "my_struct.h"
#include "functions.h"
void my_function(int a)
{
struct UserData A;
//other code
}
another_function.cpp
-------------------------
#include "functions.h"
#include <iostream>
using std::cout;
using std::endl;
void another_function(double b)
{
cout<<b<<endl;
}
my_progam.cpp
-------------------
#include "functions.h"
int main()
{
int a = 10;
double b = 20.0;
my_fucntion(a);
another_function(b);
return 0;
}
Last edited by 7stud : August 9th, 2003 at 12:17 AM.
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#3
August 9th, 2003, 12:13 AM
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I can't describe how stupid I feel right now . . . I spent over an hour baffled by this, and guess what the problem was?
I FORGOT THE ****ING SEMICOLON AT THE END!!!! AARGH!!!
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#4
August 9th, 2003, 12:22 AM
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I FORGOT THE ****ING SEMICOLON AT THE END!!!
...of the constructor declaration in the class definition I presume. Or, was that the semicolon at the end of the class definition? I always forget that one too, so I always type the closing brace with a semicolon BEFORE typing in the members and functions.
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#6
August 9th, 2003, 12:51 PM
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7stud, i sincerely sympathises with u man....
I too had pulled some hairs off my poor scalp over the same stupid semi-colon before.... happy for u man...
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