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Basic Command Processing
Cpt S 223 Homework Assignment
Submission Instructions: (see syllabus)
Assignment Instructions:
Read all the instructions carefully before you write any code.
Part 1: Set up a main function to read commands from stdin:
In this assignment, you will read simple commands from standard input. Create your
code in the file main.cpp. This assignment only requires a single .cpp file. Future assignments
will have multiple .cpp and .h files. You will display your name and ID number on a single line
to start with and then enter the command processing loop. There will be one command per line,
so your main function (pseudo-code) will be something like:
cout << “Student Name, ID#” << endl;
while (true)
{
string cmd = ReadLine();
ProcessCommand(cmd);
}
cout << “Done” << endl;
Most command strings will be much like C function calls in terms of syntax. In future
assignments, you will have a specific set of commands to handle. In this assignment, you are just
processing generic commands and parsing out function name and arguments. Commands will be
of the form:
commandName(paramList)
For each command, display 2 lines of output. The first is the string “Name:” followed by a space
and the function name. The next is the string “Parameters:” followed by a space and the
parameters (meaning the string content between the parentheses). Make sure you match casing!
Examples follow in the table on the next page.
Important: There is one special-case command used to break the processing loop. If the
command is quit(), then break the processing loop and fall through to the code that displays
“Done” as the last line.
Input Command Output
function1(a,b,c) Name: function1
Parameters: a,b,c
this_is_the_function_name(params) Name: this_is_the_function_name
Parameters: params
CPTS223(Casing_Matters) Name: CPTS223
Parameters: Casing_Maters
print(Spacing matters too) Name: print
Parameters: Spacing matters too
12345(Supports,numbers,@nd,symbols) Name: 12345
Parameters: Supports,numbers,@nd,symbols
NoParamFunc() Name: NoParamFunc
Parameters:
Part 3: Link up all the pieces:
Put all the .cpp and .h files from your project, and ONLY these files, into a .zip file and submit it
online when you are done. Do not put the files in a .rar or some other format. Use .zip or you will
not get credit for your submission.
Testing using I/O redirection: This will be covered in class and you must attend lecture to get all
the details. The short story is, if you’ve compiled a.out, want to test input file in1.txt, and
produce output in myout1.txt, the command is:
./a.out < in1.txt > myout1.txt
Final notes:
Only display information on the screen with cout when the command says to. An
automated grading application will be used to grade these assignments and the output must
exactly match the assignment requirements for it to be properly recognized and graded. Take a
good look at the sample input and output files included with the assignment to make sure your
application produces the same results for each input.
Also, for commands that you cannot get working, you must still process the command so
that the number of lines in your output matches up with the expected number of lines. Simply
process the command and display something like “not implemented” if you did not implement
the command fully. This will ensure that the grading app can grade your output line-by-line with
no problems.