C++ program

[statquos]

I need a program which run as service (in the background).

The program read a txt file where are informations: date/time and message.
example txt file:
2008/06/13
20:00:00
Go to cinema

The program check if time (date/time) is equal of system time (date/time).
If is equal, the program put a message on screen)- ex. Go to cinema.

ex.code , not compare system time and date... how make this?

VOID ProcMonitorThread(VOID *)
{
    while(ProcessStarted == TRUE)
    {
        //WriteLog(pLogFile, "Write service!!!");		
		FILE *f;
		int tmp;
		char c,time[10],date[10],msg[100];

		for(tmp=0;tmp<10;++tmp)
			time[tmp]='\0';
		for(tmp=0;tmp<10;++tmp)
			date[tmp]='\0';
		for(tmp=0;tmp<10;++tmp)
			 msg[tmp]='\0';
    
		tmp=0;

		f=fopen("Scheduler.txt","r");
    
		while(1)
		{
			c=getc(f);
			if(c==' ')break;
			time[tmp]=c;
			++tmp;
		}
		tmp=0;
    
		while(1)
		{
			c=getc(f);
			if(c==' ')break;
			date[tmp]=c;
			++tmp;
		 }
		tmp=0;
    
		while(1)
		{
			c=getc(f);
			if(c==EOF)break;
			msg[tmp]=c;
			++tmp;
		}
		fclose(f);

		MessageBox(NULL,("Time: %s   Date: %s   Message: %s",time,date,msg),"Message window",0);
	}
}