Problem 1 Write a function file_copy that takes two string parameters (in file and out_file) and copies the content of in file into out file. Assume that in_file exists before file_copy is called. For example, the following would be correct input and output: file_copy('created_equal.txt', 'copy.txt') >>> copy_f = open('copy.txt') >>> copy_f.read() 'We hold these truths to be self-evident,\nthat all men are created equal\n' Problem 2 Write a function named file_stats that takes one string parameter (in_file) that is the name of an existing text file. The function file_stats should calculate three statistics about in_file: the number of lines it contains, the number of words and the number of characters, and print the three statistics on separate lines. For example, the following would be correct input and output: >>> file_stats('created_equal.txt') lines 2 words 13 characters 72 Note: The number of characters may vary slightly between operating systems. Similarly, the number of lines may vary by 1 line, depending on the method used to calculate it. Problem 3 Write a function named repeat_words that takes two string parameters: 1. in file: the name of an input file that exists before repeat_words is called 2. out file: the name of an output file that repeat_words creates Assume that the input file is in the current working directory and write the output file to that directory. For each line of the input file, the function repeat_words should write to the output file all of the words that appear more than once on that line. Each word should be lower cased and stripped of leading and trailing punctuation. Each repeated word on a line should be written to the corresponding line of the output file only once, regardless of the number of times the word is repeated. For example, if the following is the content of the file catInTheHat.txt: Too wet to go out and too cold to play ball. So we sat in the house. We did nothing at all. So all we could do was to Sit! Sit! Sit! Sit! The following function call: inF='catInTheHat.txt' outF 'catRepWords.txt' repeat words(inF, outF) should create the file catRepWords.txt with the content: too to sit Hint: Be sure to test your solution with input in which some repeated words on a line are a mixture of upper and lower case, and in which repeated words sometimes are preceded or followed by punctuation.

(Data processing) Write a C++ program that reads the file created in Exercise 4, permits the user to change the hourly wage or years for any employee, and creates a new updated file.

1. Consider the following incomplete C++ program: #include int main() { … } a. Write a statement that includes the header files fstream, string, and iomanip in this program. b. Write statements that declare inFile to be an ifstream variable and outFile to be an ofstream variable. c. The program will read data from the file inData.txt and write output to the file outData.txt. Write statements to open both of these files, associate inFile with inData.txt, and associate outFile with outData.txt. d. Suppose that the file inData.txt contains the following data: Giselle Robinson Accounting 5600 5 30 450 9 75 1.5 The first line contains a person's first name, last name, and the department the person works in. In the second line, the first number represents the monthly gross salary, the bonus (as a percent), and the taxes (as a percent). The third line contains the distance traveled and the traveling time. The fourth line contains the number of coffee cups sold and the cost of each coffee cup. Write statements so that after the program executes, the contents of the file outData.txt are as shown below. If necessary, declare additional variables. Your statements should be general enough so that if the content of the input file changes and the program is run again (without editing and recompiling), it outputs the appropriate results. Name: Giselle Robinson, Department: Accounting Monthly Gross Salary: $5600.00, Monthly Bonus: 5.00, Taxes: 30.000 Paycheck: $4116.00 Distance Traveled 450.00 miles, Traveling Time: 9.00 hours Average Speed: 50.00 miles per hour Number of coffee Cups Sold: 75, Cost: $1.50 per cup Sales Amount = $112.50 e. Write statements that close the input and output files. f. Write a C++ program that tests the statements in parts a through e.

(Data processing) a. Store the following data in a file, or use the numbers.dat file provided on this book’s Web site. 5 96 87 78 93 21 4 92 82 85 87 6 72 69 85 75 81 73 b. Write a C++ program to calculate and display the average of each group of numbers in the file created in Exercise 2a. The data is arranged in the file so that each group of numbers is preceded by the number of data items in the group. Therefore, the first number in the file, 5, indicates that the next five numbers should be grouped together. The number 4 indicates that the following four numbers are a group, and the 6 indicates that the last six numbers are a group. (Hint: Use a nested loop. The outer loop should terminate when the end of file has been encountered.)