Devry COMP122 Lab 6 Lab Report and Source Code

COMP 122 Lab
6 Lab Report and Source Code
COMP122
Week 6 iLab
You are to design a program that will allow some number of grades
(up to a max of 100) to be input by the user. After the data has been
collected, your program should calculate and output the mean and median of the
collected data, as well as the sorted grade information.
Design Constraints
Use an integer constant of 100 to specify the number of elements
in the array you will use to collect the grade information. Do not use any
global variables in your program. Declare any arrays you need in your main
function and pass the arrays as needed into the functions described below. The
main function is the only function permitted to do any output to the console!!!
Do not do cout operations inside of any other function. Your data collection
loop in your main function must allow the user to enter less than 100 grades.
It must also make sure that the user does not try to enter more than 100
grades. Each data value entered should be checked to make sure it is between 0
and 100. Any other value entered should be considered invalid and ignored (ie.
not counted as a valid input and not stored in an array). Once the data is
collected, the array and the number of grades collected must be passed to a
function called mean. The mean function must loop through the values in the array,
summing them together. The result of the function is the sum divided by the
number of grades collected. The result must be returned from the mean function
to the main function, where is it output in an appropriate manner (two digits
after the decimal point). The main function should then pass the array and the
number of grades collected to the median function. The median of a set of
numbers is the number in the set where half the numbers are above it and half
the numbers are below it. In order to find the median, this function will need
to sort the original data. The simplest sorting procedure is called bubble
sorting. The following pseudocode describes bubble sorting for X valid array
elements.
for ; outer < x;=”” outer++=””>
for ; inner < x-1;=”” inner++=””>
if array[inner] > array[inner+1]
swap(array[inner], array[inner+1]);
After the data has been sorted, the median value can be found. If
the array has an odd number of elements the median is the value of the middle
element (Hint: arraySize/2 is the middle element). If the array has an even
number of elements then the median is the average of the middle two elements
(Hint: arraySize/2 and ( arraySize/2) – 1 are the two middle elements). The
median value should be returned by the median function. The main routine should
output the median value in an appropriate manner. The main routine should also
output the sorted array with 5 grades per line. Carefully develop test cases
for your program. Most of your test cases do not need to contain lots of
values. Make sure to include incorrect inputs such as negative grade values.
Calculate what your mean and median values should be for your test cases.
Document your test cases in a Word document. Run your test cases with your
program to see if your program generates the expected output. If not,
troubleshoot your program and fix the problem. When your program executes a
test case correctly, take a screen shot of the program output and paste it into
your Word document to prove that your test case executed correctly with your
program. Make sure that your code is properly formatted! You also need to make
sure you include a comment block for each function which documents the purpose,
inputs, and outputs of each function!
Create a program using Visual C++.Net. Make sure to capture a
screen shot of your program running your test cases! The best way to do this is
to click on the console window you want to capture and then press the Alt and
PrintScreen keys at the same time. Then paste your captured screen image into
your Word document. Your Word document should contain your test cases, the
screen shots documenting your test cases, followed by a copy of your source
code.