survey.cpp

// This is the Sliter Survey Calculation Program (slitersurvey.cpp)
// Written by: Allison Sliter
// Date: 18 July 2009
// Sources: Malik, D.S. C++ Programming: from Problem Analysis to Project Design, Colin Goble's filerewind.cpp, Ian Dees,






#include <iostream>
#include <iomanip>
#include <fstream>
#include <string>

using namespace std;

int main ()
{
	string results;
	string reply;
	string seen;
	string name;
	string line;
	int age;
	double score;
	double average, under18yavg, under18navg, over18yavg, over18navg;
	double counter, under18y, under18n, over18y, over18n;
	double youngycount, oldycount, youngncount, oldncount;
	
	string inputFileName;
	ifstream inputFile;
	
	cout << "Input file name: ";
	getline(cin, inputFileName);
	inputFile.open(inputFileName.c_str());
	
	if ( ! inputFile.is_open()) 
	{
		cout << "Oops!  Can't open that file! Make sure you give me the full file pathway. " << endl;
		cout << "Press enter to continue...";
		getline(cin, reply);
		exit(1);
	}
	
	counter = 0;       
	score= 0;       
	under18y= 0;
	under18n = 0;
	over18n = 0;
	over18y = 0;
	youngycount = 0;
	oldycount = 0;
	youngncount = 0; 
	oldncount = 0;
    
	while (inputFile) {
		
		inputFile >> name >> seen >> age >> score;
		if (!inputFile) 
			break;
		cout << left << setw(17) << name;
		cout << setw(2) << seen;
		cout << setw(3) << age;
		cout << setw(3) << score << endl; 
		
		if (seen == "Y" && age < 18)
			{under18y = under18y + score;
			youngycount++;
			}
		
		else if (seen == "N" && age < 18)
			{
			under18n += score;
			youngncount++;
			}
		
		else if (seen == "Y" && age >= 18)
			{
			over18y = over18y + score;
			oldycount++;
			}
		else if (seen == "N" && age >= 18)
		{
			over18n = over18n + score;
			oldncount++;
			}
	}
		
	
	under18navg = under18n / youngncount;
	under18yavg = under18y / youngycount;
	over18navg = over18n / oldncount;
	over18yavg = over18y / oldycount;

	average = (under18n + under18y + over18y + over18n) / (youngycount + youngncount + oldycount + oldncount);
		

	cout << fixed << showpoint << setprecision(2);
	cout << endl << endl;
	cout << "The following is the results for the above data." << endl;
	cout << "Average score given by subjects under 18 who have not seen the ad: "<< under18navg << endl;
	cout << "Average score given by subjects under 18 who have seen the ad: "<<  under18yavg << endl;
	cout << "Average score given by subjects 18 and over who have not seen the ad: "<<  over18navg << endl;
	cout << "Average score given by subjects 18 and over who have seen the ad: "<<  over18yavg << endl;
	cout << "Average score for all subjects: " << average << endl;
	
	
	// Close the input file stream
	inputFile.close();
	cout << "Press enter to continue...";
	getline(cin, reply);
	return 0;	
	
}