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

$1$

$2$

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.