CMPUT 201: Practical Programming Methodology

 Lab 5: Debuggers

 Objectives:

1-  Introduction to Debuggers (GDB and DDD): Debuggers are probably are one of the most useful tools of programmers

Click here for the Presentation

Type the following to copy examples used during the presentation to your account (don't type the dollar sign, as that indicates a generic prompt, and remember to untar and gunzip the file):

$cp ~c201/public/labs/lab5/examples.tar.gz .

And

Click here for the Tutorial

$cp ~c201/public/labs/lab5/sample.cpp .  

Exercises

1- Use the following command to copy some buggy files into your account

                              $cp ~c201/public/labs/lab5/buggy1.c .

                              $cp ~c201/public/labs/lab5/buggy2.c .

   Use either GDB or DDD to fix the above files

    Note: buggy1.c and buggy2.c are c file (not c++), you need to use gcc to compile these files

          (e.g. $gcc -g buggy1.c )

2-Tree Structures: The file tree.h and tree.cpp contain an implementation of trees. The data at each node in the tree is a c-string (char*). Please read the code for the tree structure and answer the following questions. The file treeTest.cpp contains a test driver for the Tree structure. The program reads a tree from the standard input one at a time and prints the tree on the standard output using the printTree function. Compile the treeTest.cpp program and run it with tree.txt as the standard input.
            
Hint: use the following commands:

 Copy the tar file into your directory

        $cp ~c201/public/labs/lab5/tree.tar.gz .

        $tar xzvf tree.tar.gz

 Compiling the files:

        - Use the g++ command (use -c and -o options), or

        - Write a Makefile

 Running the program

        $./tree < tree.txt

       This will produce an error message (segmentation fault). Fix the program (using either GDB or DDD).