Arrays, vectors, and STL

Write a big-inteter calculator program that allows the user to enter two large integers and the operation to be performed and that calls the appropriate function to carry out the designated operation.

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 second item, and so on. The program should allow the user to print a table displaying the product number and the price of each item.

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 number of persons in income bracket B who rated both products with a score of 5 or higher; c. the average rating for product 2 by persons who rated product 1 lower than 3. Label all output, and design the program so that it automatically counts the respondents.

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 date of last service (month, day, year). Write a program to read terminal numbers from the keyboard and directly access the line in the file for each terminal by moving the read position directly to that line. The program should retrieve and display the information about that terminal.

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.