Arrays, vectors, and STL - The Rinky Dooflingy Company manufactures different kinds of doofingies, each identified b a product number. Write a program that reads product number and prices and stores these values in two arrays, number and price;number[0] and price[0] are the product number and unit price for the first item, number[1] and price[1] aare the product number and unit price for the s...

Arrays, vectors, and STL - If x denotes the mean of a sequence of numbers x1, x2,.....xn, the variance is the average of the squares of the deviations of the numbers from the mean, and the standard deviation is the square root of the variance. Write functions to calculate the mean, variance, and standard deviation of the values stored in an array and a driver program to test your functions.

Files and Streams - People from three different income levels, A, B, and C, rated each of two different products with a number 0 through 10. Construct a file in which each line contains the income level and product rankings for one respondent. Then write a program tht reads this information and calculates the following: a. for each income bracket, the average rating for product 1; b. the numbe...

Files and Streams - Information about computer terminals in a computer network is maintained in a file. The terminals are numbered 1 through 100, and information about the nth terminal is stored in the nth line of the file. This information consists of a terminal type (string), the building in which it is located (string), the transmission rate (integer), and access code (character), and the dat...

Building Classes - The point-slope equation of a line having slope m and pasing through pint P with coordinates (x1, y1) is y-y1=m(x-x1). a. Write a class for a CartesianPoint, described by its x- and y- coordinates, with all appropriate operations on such objects. b. Write a LineSegment class, described by two CartesianPoint endpoints. In addition to the usual operations, this class sho...