Objective: Review file streams and sorting (or learn this if you haven’t in 22A)


Review file streams and sorting (or learn this if you haven’t in 22A)
Learn about vectors (if you haven’t in 22A), string streams and sort
Assignment: Write a program that reads a text file containing a set of test scores. Each line in the file contains scores of a specific student. For example, the first line has the scores for the first student and so forth. Average the scores for each student and save them in a vector of final scores. Then sort the final scores to calculate the class average and median. Print the final scores sorted from least to greatest, the class average and median. Detailed set of requirements: File processing:
Program should try to open a file using a default file path first, then check if it was successful, if not, ask the user for a different file name/path and try again until it succeeds. Do not try to process a file that you could not open. Remember to close the file when done reading.
To make sure you process each student’s scores separately, read each line from the file using the getline function. You can find an example on how to use getline here: http://www.cplusplus.com/forum… (Links to an external site.) Links to an external site.
Convert each line, which should be a string, to a string stream, so it can be used as a source for the individual test scores:
stringstream lineStream(line) // line is the string read from the file.
Read the individual scores from the lineStream variable as you would from an ifstream.
Store all final scores in a vector (not an array!).
To add values to a vector, use function push_back.
Sort the data using the sort function (you will need this for the median)
Refer to http://www.cplusplus.com/refer… (Links to an external site.)

Links to an external site. to learn how to use sort.
Calculate the average and median of the values in the vector.
Average is calculated by adding all data points then dividing by the number of data points.
Median is the data point in the middle after you have sorted them. If there is an odd number of data points, there will be only one in the middle. If there is an even number of data points, the median is the average of the two in the middle. Your algorithm must work for both cases.
Define separate functions to calculate and return average and median.
Define a separate function to print the required info on the screen:
This function should receive the vector, the average and median as parameters.
Use a range-based for loop to print the scores in the vector.
Do not use global variables!
Document your source code following the guidelines:
Lab Documentation Guidelines

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