[waffffffle]

I'm new to project builder. I used it last week for a computer science assignment. A guy who knew how to use Microsoft Visual Studio helped me figure it out, since I don't know how to use any IDE, and I really needed a debugger. That assignment didn't require anything from stdin, since it was just the implementation of the standard C library. However I found the debugger to be EXTREMELY helpful.

Now I have a project that requires a file as stdin and I don't know how to get that to happen in project builder. In the terminal I would just type <font face = "courier">cc source.c</font> and then <font face = "courier">a.out &lt; inputfile</font>

What's the equivalent in project builder? I really would like this so that i can use the debugger. Thanks.

[parallax]

You should probably use the terminal if you're going to use stdin or even complex stdout in your program. Just build the program and launch it normally from the terminal, or with gdb, which is the same thing as PB's debugger. I'm not sure if you can redirect certain things to stdin when launched in PB.

[waffffffle]

i've been using the terminal but i like using the graphical debugger in project builder. I'm supposed to know how to use gdb but I don't know how. The class expects us to use emacs, gdb and make but I find project builder nicer.

[waffffffle]

I'm topping this thread because I need to be able to read in text files to my program through standard input and they're too big to cut and paste. I looked through the help files and it shows you how to set command line arguments but when I put in "&lt; inputfile.txt" it causes my program to crash at the beginning of my main function.

Does anyone know how to do this? I know I can run my program from the terminal but I want to be able to use the graphical debugger as well. I really don't know how to use gdb.

Thanks.

[davechen]

I couldn't figure out how to do it in Project Builder. Could you read input from a file instead of stdin? If so then in Project Builder you can tell it what the command line arguements should be. Come to think of it, you might be able to put "&lt; file.txt" as the arguments.

To set the arguments for the debugger, select your target in the targets tab on the left side. Then select the executables tab on the right bottom.

If that doesn't work, you can use gdb, which isn't that hard.

It'd go something like this:

gdb program

run &lt; file.txt

When it crashes type "where" to see where the program is. "list" shows the source code. "break 42" sticks a breakpoint at line 42. If the program is running control-c will stop it.

For all those commands you can just type the first letter.

dave

[mdcarter1]

Originally posted by waffffffle:
<STRONG>i've been using the terminal but i like using the graphical debugger in project builder. I'm supposed to know how to use gdb but I don't know how. The class expects us to use emacs, gdb and make but I find project builder nicer.</STRONG>

Do yourself a favor and learn how to use emacs, gdb, and especially make. Odds are you will run into these things many times through the course of your career. I wish i would have when i was in college!

[v8q]

If it was me, I think I would just look at the command line args, and if I got an input file name, just close the stdin file descriptor and re-open it with the file name. That is all you are trying to accomplish anyway with the redirect.