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This program simulates displaying information and performing statistics for a class. You will dynamically create 2 arrays of the same size. One array will hold student numbers, the second array will hold student scores. The information for the 2 arrays will come from a file called scores.txt. [ click here to view data file ] This file has information for 1000 students. Save the file to your computer for use by your program. Prompt the user of the program for the number of students for which information will be read. Note: On my web site in the Assignments section there is an executable version of this program that you can run to see how the program should work. Here is a zip file with an executable you can use to see how the program should run. assign7.zip You are not required to prompt the user for summary or detailed information. You are also not required to run the program as a loop ( in fact you should avoid this unless you are sure of what you are doing... ). Create the arrays as integer arrays. Name your program assign7.cpp. Additional Requirements/Notes: NO global variables. You must create FUNCTIONS for sorting and printing the arrays. You may create additional functions as well. You must dynamically allocate the memory for the two arrays Use smart pointers to dynamically create the arrays. This will require the preprocessor directive #include To dynamically create the arrays, put in a declaration similar to the following: unique_ptr number (new int[students] {}); // students represents the size of the array. You will not need to worry about freeing the memory using a delete statement. This will be done automatically. See the section on Dynamic Allocation of Memory in chapter 9 for more info on dynamic arrays and class unique_ptr. A unique_ptr named number can be used almost exactly the same way as a pointer or array name called number. You will need to make a slight adjustment to the prototypes and function headers. Normally to pass two C-style arrays of the same size to a function a function header like this would be used: void sortArrays(int array1[], int array2[], int size) You will need to modify the function headers using unique pointers to the following: void sortArrays(unique_ptr& array1, unique_ptr& array2, int size) //pass unique pointers by reference! Inside the functions you could use array1 and array2 as if they were simply c-style arrays. 1. Read in student number and score from the scores.txt file for as many students as the user specified ( 5-1000 ). 2. Sort the arrays in ascending order based on the Student Number and then print the information ( one screenful at a time ). 3. Prompt the user to continue. 4. Sort the arrays in ascending order based on the Score and then reprint the information ( one screenful at a time ). 5. Calculate the mean, median and standard deviation of the scores. If there are an odd number of scores, the median is the value of element n / 2 ( e.g. scores[n/2] ) If there are an even number of scores, the median is the average of elements n/2 and n/2-1 (e.g. (scores[n/2-1] + scores[n/2]) / 2.0 ). 6. Print the mean, median and standard deviation. To calculate the standard deviation, first calculate the sample variance using the following formula: ( n is the number of scores ). ( sum of the squares of the scores ) [ ( sum of the scores )2 / ( n ) ] --------------------------------------------------------------------------- ( n - 1 ) 7. Calculate The standard deviation. The standard deviation is the square root of the sample variance.
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