Using exit codes ? (errorlevel 's) and Playing a wav file

**Omni** · 07-30-2003

Hey, i'm kinda new to C programming, i've search the net through yahoo/google and searched this site and board and still haven't been able to answer the two below problems.

I'm compiling a pre-written C program, a very small DOS command line tool, and was wonder if there was a quick and easy way for me to incorporate errorlevel's.

What i'm really wanting to do is launch the program from a bat file, and if the program exits with an error, the bat file skips to the end and finishes.

The bat file part I can do, bat programming isn't a problem.

Code:

if errorlevel 1 goto end

The problem is incorporating the errorlevels / exit codes into the C program.

Any idea's ?

The other problem i'm having is i'd like the DOS command line program to play a wav file when it finishes, so I know that its finished.

I'm really not good with C yet so any pointers would be very appreciated

Thank you in advance

**quzah** · 07-30-2003

Code:

#include <stdlib.h>

int error = EXIT_SUCCESS;

int main( void )
{
    ...do stuff...

    return error;
}

**Lynux-Penguin** · 07-30-2003

Code:

enum
{
SUCCESS=0x0,FAILURE,MEM,ETC
};

-LC

**Lynux-Penguin** · 07-30-2003

like windows

**Lynux-Penguin** · 07-30-2003

Note: this is for C++

http://www.world-voices.com/resources/cpp.html
an example:

Code:

#include <iostream.h>
#include <CString.h>
#include <windows.h>
#include <conio.h>
#pragma comment( lib, "winmm.lib" )								// Search For WinMM Library While Linking
bool opened=false;
void playM(CString);
void closeM();
int main()
{
	CString buf;
	CString buf2;
	int init;
	cout<<"Enter path of midi file: ";
	getline(cin,buf);
	buf2 = "Do you want to play: "+buf;
	init=MessageBox(NULL,buf2.std_str(),"PlayMusic",MB_YESNO|MB_ICONQUESTION);
	if(init==IDYES)
	{
		playM(buf);
		MessageBox(NULL,"Press OK to stop Playing Music","Title goes here dork!",MB_OK);
		buf2="play "+buf;

		mciSendString(buf2.std_str(),NULL,0,NULL);
		MessageBox(NULL,"Press OK to stop Playing Music","Title goes here dork!",MB_OK);
		closeM();
	}
	

	return 0;
}
void playM(CString buf)
{
	CString buf2;
	buf.makeDirectoryPath();
	buf2= "play "+buf;
	buf = "open "+buf+" type sequencer";
	mciSendString(buf.std_str(),NULL,0,NULL);
	mciSendString(buf2.std_str(),NULL,0,NULL);
}
void closeM()
{
	mciSendString("close all",NULL,0,NULL);
}

a program I wrote a while ago...
if u want CString....
CString.zip

-LC

**Omni** · 07-30-2003

Well that all looks extremely helpful, thanks for the input guys.
I'll take a look, wamp it in my code and see what happens.

This always seems like a good idea to newbies - until you've run your program several times. Then you will grow to loath and detest your program and take it out again.

Yes I know it sounds like a bad idea but for the program i'm doing it would be extremely useful.

So thanks to Lynux-Penguin for his input on that one.

Appreciate the help, Thanks all.

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