whats wrong with this? the code? my computer?

[nukem996]

i just got a new computer about 1 mouth ago. and ill ive been doing is vb. but i wanted to make a small media player, i tryed it and it didnt work. well only had 3 mouths worth off c++. for the hell of it i made hello world. but it dosent work. whats wrong with it?

#include <iostream.h>
intmain()
{
cout<< "hello world/n";
return 0;
}

i dont c any thing worng. do u?

[parksie]

Try:

#include <iostream.h>

int main() {
    cout << "Hello World\n";
    return 0;
}

[nukem996]

it dosent work. it gives me two errors LIBCD.lib(wincrt0.obj) : error LNK2001: unresolved external symbol _WinMain@16 and Debug/h.exe : fatal error LNK1120: 1 unresolved externals. whats wrong???

[parksie]

You need to make sure that your project type is Win32 Console Application rather than Win32 Application.

You're going to have to make a new project.

[nukem996]

have 2 pick up my sis.

[nukem996]

i hate when i do that. but the other code didnt work before and im sure i had win32 Console App on.
do u know how 2 declare winmm.dll i cannt figer it out.

[parksie]

#include <mmsystem.h>

And add "winmm.lib" to the list of libraries under Project Settings->Linker

[nukem996]

back

[nukem996]

when i run it with out any extra code but the declareing of the mmcontrol it gives me errors, in mmsystem.h.
c:\program files\microsoft visual studio\vc98\include\mmsystem.h(113) : error C2146: syntax error : missing ';' before identifier 'MMVERSION'

c:\program files\microsoft visual studio\vc98\include\mmsystem.h(113) : fatal error C1004: unexpected end of file found

[parksie]

Did you include <windows.h> before <mmsystem.h> ?

[nukem996]

no i didnt, thx. this is my 1st time doing something like this.

[nukem996]

thx for helping me!!!

[parksie]

No problem.

Don't worry about errors and stuff like that, it's all part of the learning process. I've been through it as have pretty much every one else. There's no way round it, but it does get easier as you go on

[nukem996]

y dosent it know lpszOpenFlags???

[parksie]

Context?

What function are you trying to use?

[nukem996]

to open but soon to play, stop and close. i got it from the msdn library.

[nukem996]

do u mean i should put something to tell the program what lpszOpenFlags means? like a file name?

[parksie]

What function are you trying to use?

[nukem996]

right now im just trying to open a file. i found this code:

MCIERROR mciSendCommand(MCIDEVICEID wDeviceID, MCI_OPEN, DWORD dwFlags, (DWORD) (LPMCI_OPEN_PARMS) lpOpen);

wsprintf(lpstrCommand, "open %s %s %s", lpszDevice, lpszOpenFlags, lpszFlags);

they both dont work, but the MSDN libery says it should.

[parksie]

Did you use:

TCHAR lpstrCommand[256];

wsprintf(lpstrCommand, "open %s %s %s", lpszDevice, lpszOpenFlags, lpszFlags);

You need to have a properly-allocated buffer.

[nukem996]

i made a menu to do this, and to do the open funtion i put in this code:
int f;
cin >> f;
if (f == 'open');
cout << endl;
cout << "What is the file location?/n";
TCHAR lpstrCommand[256];
TCHAR lpszDevice[256];
TCHAR lpszOpenFlags[256];
TCHAR lpszFlags[256];
wsprintf(lpstrCommand, "open %s %s %s", lpszDevice, lpszOpenFlags, lpszFlags);

but it dosent work. not matter what you type it skips a space then quits. so right now i dont know if it works. but it runs.

[parksie]

First thing, you need to use a string, since you can't store text in an integer

#include <iostream>
#include <string>

using namespace std;

void main() {
    string sCmd, sDev, sOpenFlags, sFlags;
	cout << "Command: ";
    cin >> sCmd;
	if(sCmd == "open") {
		cout << endl;
		cout << "Device: ";
		cin >> sDev;
		cout << "Open flags: ";
		cin >> sOpenFlags;
		cout << "Flags: ";
		cin >> sFlags;

		sCmd = sCmd + " " + sDev + " " + sOpenFlags + " " + sFlags;
		cout << "Command == " << sCmd << endl;
	}

	// So, to get as a character string, use sCmd.c_str()
}

[nukem996]

o thx, but i remember doing it without strings before, maybe i just forgot last time i did c++ was 3 mouths ago.