In this assignment, you will write a program that gets a pattern string from command$-$line arguments, receives multiple lines from the standard input stream, and fnally prints out the lines containing the pattern string.

Program Command Line Arguments

The program must support the following command$-$line arguments:

$(10$ points$)-$n: prints out the line numbers that contain the pattern string. Please note that line$-$numbering starts from $1.$

$(10$ points$)-$x: prints out the lines that do not contain the pattern string; i$.$e$.$ it excludes the lines containing the pattern string.

$(10$ points$)-$s: prints out the lines in alphabetical order. Without this fag, the default order is FIFO.

$(10$ points$)-$r: prints out the lines in the reverse order $($the line that appears last in stdin will appear frst in stdout$).$ Please note that you must make sure that user does not use $-$s and $-$r fags at the same time. If user wants to use both $-$s and $-$r fags, your program must get terminated after giving proper error message to the user.

$(10$ points$)-$m: fnds the pattern string only if it matches the whole word. You can assume that words are separated by white$-$space character only.

$(5$ points$)-$c: ignores the case when fnding the pattern string.

$(15$ points$)-$f: prints out the index of the frst occurrence of pattern string in each line. Please note that you must make sure that user does not use $-$f and $-$x fags at the same time. If user wants to use both $-$f and $-$x fags, your program must get terminated after giving proper error message to the user.

$(20$ points$)-$p: partially prints out each line containing the pattern. To print out each line partially, you need to print the frst $10$ characters of the line, followed by an ellipsis $(...),$ followed by the pattern followed by another ellipsis, followed by the last

$12$

fve characters of the line. You can remove the frst ellipsis if the pattern overlaps the frst $11$ characters. Also, you can remove the second ellipsis if the pattern overlaps the last six characters. Additionally, you can print the whole sentence if the length of sentence is not greater than the pattern length plus $15.$ Please note that you must make sure that user does not use $-$p and $-$x fags at the same time. If user wants to use both $-$p and $-$x fags, your program must get terminated after giving proper error message to the user.

$2$ Input$/$Output of Your Program

Your program must accept a sequence of lines followed by an EOF character from standard

input stream. Here is an example of program input:

I$\text{'}$m very interested in Computer Science

This is a test statement

I$\text{'}$m in

In$-$N$-$Out has great burgers in fact

Last sentence In $,+$D

The output is g

Make a makefile, util.c$,$ find.h$,$ and find.c in c code