Reading Serial Data From C (OSX /dev/tty)

Question

I am trying to read data from a bluetooth barcode scanner (KDC300) using C. Here is the code I have so far, and the program successfully establishes a bluetooth connection to th

Answer 1

In your code

printf("%s", strcat("Unable to open /dev/tty.", argv[1]));

Why did you do that? It would be easier to do it this way:

printf("%s: Unable to open /dev/tty.KDC1", argv[0]); 

Why the parameter referencing to the command line?

res = read(fd,buf,255)

Why did you have buf declaration commented out above?