How to count total lines words and chars in two files using command line arguments and how to implement find char.

This assignment involves writing a C++ program to identify and count lines, words, and

characters. For the purpose of this assignment, we define a “word” as a sequence of characters

that are not whitespace characters. Words are delimited by one or more whitespace characters.

A whitespace character, such as a space, tab, or newline, is any character for which the

<cctype> function isspace() returns a value of true.

The operation of your program is controlled by the command line arguments that are passed to

your program. Command line arguments consist of an optional set of flags arguments (a flag

argument is an argument whose first character is a dash), followed by an optional list of

filenames. If no filenames are specified, the program should read from standard input.

For each file specified (or, in the case of no file names specified, the standard input), the

program must read the entire input and produce a count of characters, lines, and words. The

output should be printed, one line per file, as follows:

Lines words characters filename

The numerical output (lines, words, characters) should be printed right justified in columns that

are 12 characters wide. The filename should be printed left justified in the fourth column. In the

case where the program in reading standard input, no filename should be printed.

If the program reads multiple files, then it should also provide a line at the end of the output with

a total of all of the lines, words and characters in all of the files that were processed. The totals

are tagged with the label “total”:

totalLines totalWords totalCharacters total

If the program is run with a flag in the form “-findchar=x”, then the program must also count the

number of times it sees the character x in each file.

For example if I run the program by saying

program -findchar=m infile1 infile2

Then the output might be:

10 200 1000 infile1

20 150 1010 infile2

30 350 2010 total

m: 3 20 100 infile1

m: 0 0 0 infile2

m: 3 20 100 total

1 CS280 Programming Assignment 1

Spring 2017 This means that the letter m appears on 3 different lines in infile1, in 20 different words, for a

total of 100 times

If the program is run with a flag in the form “-findword=thisword”, then the program must count

the number of times it sees the word thisword in each file.

For example if I run the program by saying

program -findword=this infile1

Then the output might be:

10 200 1000 infile1

this: 7 12 infile1

This means that the word this appears on 7 different lines for a total of 12 times.

The program should accept multiple -findchar= arguments and multiple -findword= arguments,

in any order. The output should be counts, then all findchar cases in alphabetical order, then all

findword cases in alphabetical order

The student will be provided with a test script, a set of test files, and a series of test cases.

There are several error cases that must be handled:

Error Action A file is not found Print “File filename is not found” and stop An

argument is poorly formed (a known

argument is missing the = sign, has nothing

after the = sign, or (in the case of findchar,

has more than one character after the =) Print “Argument arg is poorly formed” and

stop An argument is not recognized Print “Argument arg is not recognized” and

stop A flag is duplicated Ignore the fact that a particular flag argument

is duplicated. Only process each letter or

word one time no matter how many times it is

specified on the command line A file name appears more than once The file should be processed each time the

name appears in the list 2 CS280 Programming Assignment 1

Spring 2017 DUE DATES AND TEST CASES

On Feb 6, the following test cases will be due and must pass:

– Compile

– Count lines, words and characters in one file

– Correctly handle the file not found error case

– Detect poorly formed arguments

– Detect unrecognized arguments

On Feb 13, the following test cases will be due and must pass:

– All Feb 6 test cases

– Handle multiple files

– Handle reading from standard input

– Case of single findword

On Feb 20, the following test cases will be due and must pass:

– All Feb 13 cases

– Full implementation of findword

– Full implementation of findchar

The first two deliverables will have a 3 day grace period, where 10% of the grade for those

deliverables is lost for every day of lateness.

The final deliverable will have a 7 day grace period, where 10% of the grade for the deliverable

is lost for every day of lateness

Sample files and test cases will be provided and will automatically populate in Vocareum. 3