Read a text file and output: $-$ The alphabetic character$($s$)$ that appear most frequently in the file $($note: for all counts, ignore the character$$s case. e$.$g$.$ treat $$a$$ and $$A$$ as the same character$)-$ The alphabetic character$($s$)$ that appear least frequently in the file $-$ A list of the characters and their frequencies, sorted from most frequent to least frequent. Characters that appear with the same frequency should be sorted alphabetically $-$ A bar chart displaying the frequencies of each character with the bars displaying with asterisk. The horizontal axis should be the characters from a$-$z with a space between each character.

Specifications $-$ All output should be directed to the standard output device using cout. $-$ Output formatting should match the example above and the sample output files given for the tests provided. Note the proper use of singular and plural $($character$/$ characters, time$/$times$)$ and use of commas and $$and$$ when listing characters. $-$ Your main function$$s signature should be: main$($int argc, char $*$ argv$[])-$ Your program will be run with the program name followed by the name of the input file your file should open and read $($argv$[1]).$ For example, if one types $./$program$3$ test$1-$input.txt at the command prompt, program$3$ should open test$1-$input.txt from the current directory, read all of the text in the file, and produce output to the standard output device $($using cout$)-$ Your main function must be implemented in program$3.$cpp $-$ Place the function prototypes for all functions you write to call in your main in program$3$functions.h $-$ Place the function implementations for all functions you write to call in your main in program$3$functions.cpp $-$ The only header files that may be included in your code are: iostream, fstream, iomanip, cmath, cctype, and program$3$functions.h $-$ You will submit a zip file $($only a zip file will be accepted$)$ containing program$3.$cpp$,$ program$3$functions.h$,$ and program$3$functions.cpp Testing Text files containing sample input and the corresponding expected output for program$3$ are also attached to the assignment. A makefile has been included to run your program with the sample input and compare the results to the expected output. In order to use the makefile, ensure that your program$3$functions.h$,$ program$3$functions.cpp$,$ and program$3.$cpp files and all of the files attached to the assignment $($checkit$.$cpp$,$ correct$-$test$1.$txt$,$ correct$-$test$2.$txt$,$ makefile, test$1-$ input.txt$,$ test$2-$input.txt$)$ are in the same directory. Your program will be graded using this same method with different input$/$output file pairs. To run the included tests on your program, type: make program$3$test$1$ make program$3$test$2$

Example input$/$output pairs

Input file contents:

The quick brown fox jumps over the lazy dog.

Program's corresponding output:

Highest frequency character $($appeared $4$ times in the file$)$: o

Lowest frequency characters $($appeared $1$ time in the file$)$: a$,$ b$,$ c$,$ d$,$ f$,$ g$,$ i$,$ j$,$ k$,$ l$,$ m$,$ n$,$ p$,$ q$,$ s$,$ v$,$ w$,$ x$,$ y$,$ and z

$0$: $4$

e: $3$

h: $2$

r: $2$

t: $2$

u: $2$

a: $1$

b: $1$

c: $1$

d: $1$

f: $1$

g:$1$

i: $1$

j: $1$

k: $1$

l: $1$

m: $1$

n: $1$

p: $1$

q : $1$

s: $1$

v : $1$

w: $1$

x : $1$

y:$1$

z:$1$

abcdefghijklmnopqrstuvwxyz