midi programming

[jaquenta]

what's wrong with this code??? i'm trying to play an array on notes thru midi....only new to this subject....this code compiles but crashes when i run the .exe file....think i remember someone saying something about running printf and scanf with midi although i can't for the life of me remember what it was... if anybody has information they could share would really appreciate it . cheers

runing the code with: gcc -o test test.c -I. -L. -lportmidi -lwinmm

#include <stdio.h>
#include <string.h>
#include <math.h>
#include <stdio.h>
#include <portmidi.h>
#define MD_NOTEON 0x90
#define MD_NOTEOFF 0x80
#define MD_PRG 0xC0
#define SBYTE(mess,chan) mess | chan

int main()
{
	int array [3][3];
	
	int a [3]={0,0,0}; 
	int b [3]={0,0,0}; 
	{
		int play(int array[3][3]); 
		{
		
			int cnt,i,dev;
			PmError retval;
			const PmDeviceInfo *info;
			PortMidiStream *mstream;
			Pm_Initialize();
			if(cnt = Pm_CountDevices())
			{
				for(i=0; i < cnt; i++)
				{
					info = Pm_GetDeviceInfo(i);
					if(info->output)
					printf("%d: %s \n", i, info->name);
				}
				printf("choose device: ");
				scanf("%d", &dev);
				Pt_Start(1, NULL, NULL);
				retval = Pm_OpenOutput(&mstream, dev,
				NULL,512,NULL,NULL,0);
				if(retval != pmNoError)
				printf("error: %s \n", Pm_GetErrorText(retval));
				else 
				{
					int a,b,
					fine = array [a][b];
					char chan = 0;
					int prg = 4;
					long time = 0;
					if(fine == 0)
					{
						Pm_WriteShort(mstream, 0,
							Pm_Message(SBYTE(MD_PRG,chan), prg, 0));
						time = Pt_Time(NULL);
						Pm_WriteShort(mstream, 0,
							Pm_Message(SBYTE(MD_NOTEON,chan), 60, 120));
						while(Pt_Time(NULL) - time < 1000);
						Pm_WriteShort(mstream, 0,
							Pm_Message(SBYTE(MD_NOTEOFF,chan), 60, 120));
						
					}
				}
				Pm_Close(mstream);
			} 
			else printf("No available output devices\n");
			Pm_Terminate();
			return 0;
		}
	}
}

[Salem]

> int array [3][3];
This is uninitialised

> int a [3]
This array is masked by a variable with the same name in an inner scope.
Ditto for b

> fine = array [a][b];
Your a and b are uninitialised here as well, so you just index garbage.

> gcc -o test test.c -I. -L. -lportmidi -lwinmm
Try
gcc -W -Wall -o test test.c -I. -L. -lportmidi -lwinmm
Then fix what it complains about.