ps4 - 1.124J Foundations of Software Engineering Problem...

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1.124J Foundations of Software Engineering Problem Set 4 Due Date: Tuesday 10/17/00 Reference Readings: From C++ Primer (in addition to the reference reading from PS1, PS2 & PS3): Chapter 11: I/O Chapter 12: Templates chapter 14: File processing From algorithms in C++ Chapter 9: Quicksort Chapter 14: Binary search Problem 1:[40%] In this problem you need to develop a program that can handle user-provided data. You need to write the main() function and two template functions. The program should be able to read using the one template function monthly data for a number of years. It should be used twice, once to read the number of visitors, let's say to a tourist resort, and the other the income in millions of dollars. The input data are provided in the following files, in tabular form with each row representing the year and for each row having 12 columns, one for each months visitorsNumber.data : contains the number of tourist visitors touristIncome.data : contains the revenue in millions of dollars e.g. the touristIncome.data file looks as follows: 474.33 129.72 232.33 239.43 234.56 244.60 286.72 362.46 283.43 245.26 253.40 98.07
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240.34 268.36 245.36 165.36 234.45 242.43 344.25 320.20 447.93 375.26 201.30 94.34 The first element represents the tourist income for the first month of the corresponding year, which in this case assume that it is 1997. The second row has the 12 values for the income for the 1 months of year 1998, and so on. You are asked to implement the two template functions in the file ps4_1.h, and the main() function in the file ps4_1.C . main(): The main() function should: Create an array of int s, of a 50 rows by 12 columns size, to hold the provided data. This array should be named visitors . Invoke the template function readData to read in the data. The readData function should read until the end of the provided file. Each row has 12 values, which correspond to the values of each month of a given year. The function readData should get from the user the initial year. It should also count the number of years for which data are provided in the input file. Invoke the function writeInvertedData to save in a file, whose name is given by the user, the numbers for visitors, in inverted format. The data should be saved in tabular form with each column representing a year and each row a month. A certain formatting should be used as shown in a sample execution of the program. Then, create an array of double, of size 50 rows by 12 columns, to hold the provided data. Name the array income . Invoke the template function readData to read in the data. The readData function should read all rows until the end of the provided file. Each row has 12 values, one for each month of the corresponding year. The function readData should get from the user the initial year. It should count the number of years for which data are provided in the input file while reading the data.
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