ENEE150 – 0202 ANDREW GOFFIN Introduction to ENEE150

Welcome to class! Contact information/Office Hours   Office Hours: TBA  Willing to meet outside of discussion and office hours – just ask! Goffin – ENEE150

Grading Main part of the class is actual, physical code  Most of this grade is simply correctness  Make sure match public tests’ format on the projects, makes grading much easier.  Style isn’t THAT important in this class… but I like neat code  If you have sufficient commenting, good variable names, and proper indenting, you’ll get full credit  “Sufficient” commenting is typically one comment per function, then a comment for any non-obvious code  Indent for every new code block!!

Setting up Glue Glue is the system on which we run our programs for this class  Students from 140 should be familiar with it  All programs MUST execute correctly on Glue to get full credit For Linux/OSX users, just use the terminal  Type “ssh into the command line to get onto the machine A bit more tricky for Windows users… Goffin – ENEE150

Setting up Glue: Windows Install PuTTY Host Name  linux.glue.umd.edu Leave all other options alone! Press “Open” Log into glue using UMD ID/password Goffin – ENEE150

Crash Course on Unix Get used to using the command line instead of a graphical interface Two main kinds of objects: files and directories  Files are what you expect  Directories are like folders in Windows Unix uses a directory tree, building from the root down  /etc is the etc directory, which is one level down from root (designated by the backwards slash) Goffin – ENEE150

Crash Course in Unix II Important commands:  cd - change directory  cp - copies file to location  mv - moves file to location  rm - removes file (can remove directory with –r flag)  mkdir - makes a directory  ls – lists all items in the working directory (more detailed listing with –l flag)  ssh - secure connection to another machine  gcc - compiles C file into an executable called “a.out”  man - provides manual on how to use command Goffin – ENEE150

Writing a C Program in Glue Open a file called “helloworld.c” using your favorite text editor  Text editors include vim, emacs, nano… matter of preference Type the following: Include the stdio library Prints the string “Hello world!” followed by a newline Goffin – ENEE150

Writing a C Program in Glue Save the text file Use the command “gcc helloworld.c” to compile a C executable  This executable is called “a.out” To run the executable, type “./a.out” Add a comment to the text file with your name and section, and submit it  Use assignment number 0 Goffin – ENEE150

Submit Command On Glue, you can submit files using the “submit” command The format for submit is year -> semester -> class -> section -> submission number -> file  Submission numbers will be given for each assignment  If you forget this, just type “submit” and the terminal will remind you! Goffin – ENEE150

Further Notes on Submit You can, and probably SHOULD, submit an assignment multiple times  Older submissions will not be overwritten After you’ve submitted, do not modify or save the file.  In case submit has issues, I may need to be able to check the timestamp on the file in Glue Goffin – ENEE150