Comp122 lab 6 lab report and source code

1. COMP122 Lab 6 Lab Report
and Source Code
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Product Description
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

2. 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.