Write a program in C to decrypt a cipher text using Caesar Cipher substitution method.Plain text was first encrypted with a Cipher Key within the range 1 to 26 and then encrypted then encrypted with key -1 (minus 1).Find the first key and write the key numbers and the decrypted plain text into text mode file "done.txt" using your program

Write a MATLAB script m-file to read in a height (in meters) and a weight (in kilograms) from the keyboard, then compute and display the body mass index (BMI), according to the formula: BMI=mass/height^2 Display a text message based on the computed BMI as indicated in the ranges below.  - Range: BMI ≤ 18.5   Message: “Underweight” -Range: 18.5 < BMI ≤ 25   Message: “Normal” -Range: 25 < BMI ≤ 30   Message: “Overweight” -Range: 30 < BMI   Message: “Obese”

Write a C program to read in a text file and provide a count ofa. The number of strings in the file, where a string begins with anon–white space character and ends with a white space character.b. The number of words in the file, where a word begins withan alphabetic character (e.g., a–z or A–Z) and ends with anonalphabetic character.c. The number of unique words in the file. Words are as defined inpart b. The set of unique words has no duplicates.d. The frequency of words in order of most frequent to least frequent.In other words, analyze the text file, count the number of times eachword occurs, and display these counts from most frequent word toleast frequent.

Draft a Python program that prompts the user for the name of two files. The script should copy the lines of text from the input file to the output file, numbering each line as it goes. The line numbers should be right-justified in 4 columns, so that the format of a line in the output file looks like this example:

Write a Python program stored in a file q1.py that calculates what day of the week a certain date will be in a given month. The user will first start by entering the first day of the month (i.e. Monday) and then enter a number from 1 to 30. In this problem, we assume that all months have 30 days. The program will output what day the number corresponds to. Users can enter days by the first three letters of the day, the whole name for the day, or the single letter abbreviation (U-Sunday, M-Monday, T-Tuesday, W-Wednesday, R-Thursday, F-Friday, S-Saturday). Example:  Enter the first day of the month: M Enter a date: 19 The 19th is a Friday.

Professor Potter, a punning pedantic, practices puzzling her students. She has left a secret message, of unknown length, encoded in a file for you to unravel. The setup is simple: each line of the file contains one char and one non-negative integer. The key to reading the message is organizing the characters in the proper order. The integer indicates the position of the character within the message. For example: e 2 b 1 a 3 h 5 c 4 spells 'beach' when unraveled. Write a program that will: Ask the user for the name of a file Check to see that the file exists and contains some data. Open and read this file exactly once Using your MessageDecoder class, unravel and display the message Offer to do it again on another file Required classes: You will create and submit 2 classes: MessageDecoder class: Responsible for converting a scrambled message file into plain text. Contains a public method getPlainTextMessage() that returns the String object. The scrambled file must be scanned only once…