survey.cpp

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

using namespace std;

int main ()
{
	// Declarations
	string results;
	string reply;
	string seen;
	string name;
	string line;
	int age;
	double score;
	double average, under18yavg, under18navg, over18yavg, over18navg;
	int counter, under18y, under18n, over18y, over18n;
	int youngycount, oldycount, youngncount, oldncount;
	
	string inputFileName;
	ifstream inputFile;
	
	cout << "Input file name: ";
	getline(cin, inputFileName);
	// Open the input file.
	inputFile.open(inputFileName.c_str());      // Need .c_str() to convert a C++ string to a C-style string
	// Check the file opened successfully.
	if ( ! inputFile.is_open()) {
		cout << "Unable to open input file." << endl;
		cout << "Press enter to continue...";
		getline(cin, reply);
		exit(1);
	}
	
	counter = 0;       // Must initialize the counter to zero
	score= 0;       // Must initialize the accumulator to zero.
	under18y= 0;
	under18n = 0;
	over18n = 0;
	over18y = 0;
	youngycount = 0;
	oldycount = 0;
	youngncount = 0; 
	oldncount = 0;
    
	while (inputFile) {
		
		inputFile >> name >> seen >> age >> score;
		cout << 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++;
		}
		
		if (seen == "N" && age < 18)
		{under18n += score;
		youngncount++;}
		
		if (seen == "Y" && age >= 18)
		{over18y = over18y + score;
		oldycount++;}
		else {
			over18n = over18n + score;
			oldncount++;
		}
		
		under18yavg = under18y / youngycount;
		under18navg = under18n / youngncount;
		over18yavg = over18y / oldycount;
		over18navg = over18n / oldncount;
		
		cout << fixed << showpoint << setprecision(2);
		cout << "Total Score for the Under 18 who have seen the ad = " << under18y << " and the avg is "<<  under18yavg << endl;
		cout << "Total Score for the Under 18 who have not seen the ad = "<< under18n << " and the avg is "<<  under18navg << endl;
		cout << "Total Score for Adults who have seen the ad = " << over18y << " and the avg is "<<  over18yavg << endl;
	cout << "Total Score for Adults who have not seen the ad = " << over18n << " and the avg is "<<  over18navg << endl;}
	
	
	// Close the input file stream
	inputFile.close();
	cout << "Press enter to continue...";
	getline(cin, reply);
	return 0;	
	
}