Make cpp program a function

[DSTR3A]

I have a small cpp program (1) that I want to call from another cpp program (2). I tried making (1) into a header file placing it into (2) so that I can call it. However (2) didn't like it and said I was overloading main. Here is ths code I tried making a header file out of. I just want to call ita s a function ideally from (2). Any help is appreciated. Thank you.

#include "stdafx.h"
#include <iostream>
#include <stdio.h>
#include <string>
#include <vector>
#include <windows.h>
 
using namespace std; 
typedef vector<WIN32_FIND_DATA> tFoundFilesVector; 
std::wstring LastWriteTime;   
//int getFileList(wstring filespec, tFoundFilesVector &foundFiles) //uni
int getFileList(const char * filespec, tFoundFilesVector &foundFiles) //ansi
{ 
    WIN32_FIND_DATA findData; 
    HANDLE h; 
    int validResult=true; 
 
    int numFoundFiles = 0; 
    //h = FindFirstFile(filespec.c_str(), &findData); //uni 
	h = FindFirstFile((LPCSTR)filespec, &findData); //ansi 
    if (h == INVALID_HANDLE_VALUE) 
        return 0; 
 
    while (validResult) 
    { 
        numFoundFiles++; 
        foundFiles.push_back(findData); 
        validResult = FindNextFile(h, &findData); 
    } 
    return numFoundFiles; 
} 
 
void showFileAge(tFoundFilesVector &fileList) 
{ 
    unsigned _int64 fileTime, curTime, age; 
    tFoundFilesVector::iterator iter; 
    FILETIME ftNow; 
    CoFileTimeNow(&ftNow); 
          curTime = ((_int64) ftNow.dwHighDateTime << 32) + ftNow.dwLowDateTime; 
 
          for (iter=fileList.begin(); iter<fileList.end(); iter++) 
    { 
        fileTime = ((_int64)iter->ftLastWriteTime.dwHighDateTime << 32) + iter->ftLastWriteTime.dwLowDateTime; 
 
        age = curTime - fileTime;
		if (age <= (_int64)200000000UL)
		{
			wcout << " Delete: '" <<endl;
			wcout << "FILE: '" << iter->cFileName << "', AGE: " << (_int64)age/10000000UL << "  seconds" << endl; 
			remove(string("c:\\mapper\\").append(string(iter->cFileName)).c_str()); 			
		}
		else
		{
			//wcout << " Quit: '" <<endl;
			//wcout << "FILE: '" << iter->cFileName << "', AGE: " << (_int64)age/10000000UL << "  seconds" << endl; 
			//return;
		}
    } 
} 
 
int main() 
{ 
    string fileSpec = "*.*"; 
    tFoundFilesVector foundFiles; 
    tFoundFilesVector::iterator iter; 
 
    int foundCount = 0; 
 
    getFileList("c:\\Mapper\\*.txt", foundFiles); 
    getFileList("c:\\Mapper\\*.jpg", foundFiles);
	     foundCount = foundFiles.size(); 
    if (foundCount) 
    { 
        wcout << "Found "<<foundCount<<" matching files.\n"; 
        showFileAge(foundFiles); 
    } 
    system("pause"); 
    return 0; 
}

[Computergeek01]

You should know that this will not check subfolders for their contents. The "Main()" function in this is just an entry point, if you took the two functions and copy+pasted them into your other program, or better yet a header of their own, then you would be all set.

[DSTR3A]

Thank you! I know, its only the one folder. Thats all I need a this point. I tried copying all of the code, dropping it into a header file. did an #include <header> at the top of (2). wacked everything up. Big one is that I was overloading main(). Is there a way to simply call this applet (1) when App (2) needs it?I'm still pretty new to this. I tried pasting this right into where I needed it and that brought up a slew of errors. Any help appreciated. Thank you.

[Computergeek01]

Just paste Lines 1 - 59 into their own header, include that header with double quotes (because I assume you're pulling it from the same directory as your second applications .cpp file) and call the functions when you need them.

[DSTR3A]

#include "stdafx.h"
#include <iostream>
#include <stdio.h>
#include <string>
#include <vector>
#include <windows.h>
 
using namespace std; 
typedef vector<WIN32_FIND_DATA> tFoundFilesVector; 
std::wstring LastWriteTime;   
int getFileList(const char * filespec, tFoundFilesVector &foundFiles)
{ 
    WIN32_FIND_DATA findData; 
    HANDLE h; 
    int validResult=true; 
 
    int numFoundFiles = 0; 
    h = FindFirstFile((LPCSTR)filespec, &findData);

But getting errors on

Getting a whole lot of macro redefination errors in winsock2.h and 
 
    if (h == INVALID_HANDLE_VALUE) 
        return 0; 
 
    while (validResult) 
    { 
        numFoundFiles++; 
        foundFiles.push_back(findData); 
        validResult = FindNextFile(h, &findData); 
    } 
    return numFoundFiles; 
} 
 
void showFileAge(tFoundFilesVector &fileList) 
{ 
    unsigned _int64 fileTime, curTime, age; 
    tFoundFilesVector::iterator iter; 
    FILETIME ftNow; 
    CoFileTimeNow(&ftNow); 
          curTime = ((_int64) ftNow.dwHighDateTime << 32) + ftNow.dwLowDateTime; 
 
          for (iter=fileList.begin(); iter<fileList.end(); iter++) 
    { 
        fileTime = ((_int64)iter->ftLastWriteTime.dwHighDateTime << 32) + iter->ftLastWriteTime.dwLowDateTime; 
 
        age = curTime - fileTime;
		if (age <= (_int64)200000000UL)
		{
			wcout << " Delete: '" <<endl;
			wcout << "FILE: '" << iter->cFileName << "', AGE: " << (_int64)age/10000000UL << "  seconds" << endl; 
			remove(string("c:\\mapper\\").append(string(iter->cFileName)).c_str()); 			
		}
		else
		{
			wcout << " Quit: '" <<endl;
			wcout << "FILE: '" << iter->cFileName << "', AGE: " << (_int64)age/10000000UL << "  seconds" << endl; 
			return;
		}
    } 
} 
 
int colts() 
{ 
    string fileSpec = "*.*"; 
    tFoundFilesVector foundFiles; 
    tFoundFilesVector::iterator iter; 
 
    int foundCount = 0; 
 
    getFileList("c:\\Mapper\\*.txt", foundFiles); 
    getFileList("c:\\Mapper\\*.jpg", foundFiles);
	     foundCount = foundFiles.size(); 
    if (foundCount) 
    { 
        wcout << "Found "<<foundCount<<" matching files.\n"; 
        showFileAge(foundFiles); 
    } 
    return 0; 
}

getting a whole lot of macro redefination on winsock2.h, and ws2pdef.h Thank you.

[DSTR3A]

Got it. Did what you said it works!

[Nybble]

Including "functions" and initializing variables etc... in a header file will probably cause problems down the road, unless its not a big project, but still what I do is, I make a header and a cpp file to go hand in hand for example:

"Func1.h" then I make a cpp file: "Func1.cpp"

In the header file you would have your functions and variables and what not as extern like this:

extern int i;
extern void Func1();
// ETC... 

then on your cpp file you would actually initialize them like this;

int i = 1;

void Func1()
{
if (condition)
{
//do stuff
}
}

then you just include "Func1.h" in how ever many cpp files you need to use the functions in, this is the method I prefer, but what ever float your boat.