Question

Write a C++ program that will deliver a multiple choice quiz.

The program should

• Read questions from the file questions.txt
• Read the answer key for each test question from the file answers.txt
• When the program runs it will present each question and obtain a response
• After all questions have been answered, the program should output a report with the question number, the response given and either “correct” or “incorrect”. Show the output on the console and store the report in a file named studentResults.txt
• Re-prompt for questions that are not answered A, B, C or D

questions.txt content:

1 The chemical reference for water is: A) H0 B) H2O C) CO2 D) W2C
2 Which ocean boarders New York: A) Pacific B) Baltic C) Atlantic D) Mediterranean
3 Which bridge is not in California: A) Golden Gate B) Dumbarton C) Brooklyn D) Carquinez
4 The highest hand in poker is A) Straight Flush B) Four of a kind C) Full House D) Royal Flush
5 The game of Baseball has A) 9 innings B) 4 quarters C) 6 sets D) 2 periods
6 The most populated city in the USA is A) Los Angeles B) San Francisco C) New York City D) Chicago
7 The world city with the greatest population is A) Tokyo B) Delhi C) Guangzhou D) Karachi
8 The longest river in the world is A) Mississippi B) Nile C) Lena D) Yangtze

answerKey.txt contains:

1 B
2 A
3 C
4 D
5 A
6 C
7 A
8 B

Example of report when the following responses B,A,C,D,B,C,A,C are entered
1 answer B correct
2 answer A correct
3 answer C correct
4 answer D correct
5 answer B incorrect
6 answer C correct
7 answer A correct
8 answer C incorrect
Your missed 2 questions

Test your program using the following responses to questions 1-8
A
B
C
D
X
A
B
C
D

Submit files: screenCapture.png, studentResults.txt, and quizProgram.cpp to Canvas

Expectations:

Your program will use at least three or more functions
Your program will have a prototype statement for each function

Suggestions:

Use functions names like getQuestion getAnswer writeResults getUserInput, openFiles and closeFiles.

You can use a string data type for questions (don't forget the header file
needed for using strings). It might also be useful for you to do a stub program to arrange your functions before you begin coding them.

Answer 1

Screenshot

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Program

//Header filesforI/O ,file operations,string read and storage
#include <iostream>
#include<fstream>
#include<string>
#include<vector>
using namespace std;
//Function prototypes
void readQuestionsAndanswers(ifstream&, ifstream&,vector<string>&,vector<char>&);
void writeReport(ofstream&,vector<char>,vector<char>);
void askQuestions(vector<string>, vector<char>, vector<char>&);
int main()
{
   //Store file reads and user responses
   vector<string> questions;
   vector<char> answers;
   vector<char> responses;
   //File for questions
   ifstream inQuestion("questions.txt");
   //File for answers
   ifstream inAnswer("answerKey.txt");
   //Call function to read input files
   readQuestionsAndanswers(inQuestion, inAnswer, questions, answers);
   //Call function to ask questions to user
   askQuestions(questions, answers, responses);
   //Output result storage file name
   ofstream out("studentsResult.txt");
   //Call function for report
   writeReport(out, answers, responses);
}
//Function to get questions and its answers from the files
void readQuestionsAndanswers(ifstream& inQuestion,ifstream& inAnswer,vector<string>& questions, vector<char>& answers) {
   //variable for each line read
   string line = "";
   char resp;
   int qNum;
   //Error check in file open
   if (!inQuestion || !inAnswer) {
       cout << "File not open!!!" << endl;
       exit(0);
   }
   //Loop until end of the file ad store into vector
   while (getline(inQuestion, line)) {
       questions.push_back(line);
       inAnswer >> qNum >> resp;
       answers.push_back(resp);
   }
   //Close input files
   inQuestion.close();
   inAnswer.close();
}
//Result Function to display and write into file
void writeReport(ofstream& out, vector<char> answers, vector<char> responses) {
   //variable for incorrect
   int inCorrect = 0;
   //Compare ansers and display result
   for (int i = 0; i < responses.size(); i++) {
       if (responses.at(i) == answers.at(i)) {
           cout << (i + 1) << " answer " << responses.at(i) << " correct" << endl;
           out << (i + 1) << " answer " << responses.at(i) << " correct" << endl;
       }
       else {
           cout << (i + 1) << " answer " << responses.at(i) << " incorrect" << endl;
           out << (i + 1) << " answer " << responses.at(i) << " incorrect" << endl;
           inCorrect++;
       }
   }
   cout << "Your missed " << inCorrect << " questions" << endl;
   out << "Your missed " << inCorrect << " questions" << endl;
   //close output file
   out.close();
}
//Function to ask questions and get answers from user
void askQuestions(vector<string> questions, vector<char> answers, vector<char>& responses) {
   //Variable for answer
   char ch;
   //Ask Questions
   for (int i = 0; i < questions.size(); i++) {
       cout << questions.at(i) << endl;
       cout << "Enter your answer: ";
       cin >> ch;
       ch = toupper(ch);
       while (ch != 'A' && ch != 'B' && ch != 'C' && ch != 'D') {
           cout << "Error!!!Response shoulb A,B,C or D.Re-enter!!!" << endl;
           cout << questions.at(i) << endl;
           cout << "Enter your answer: ";
           cin >> ch;
           ch = toupper(ch);
       }
       responses.push_back(ch);
   }
   cout << endl;
}

--------------------------------------------------

output

1 The chemical reference for water is: A) H0 B) H2O C) CO2 D) W2C
Enter your answer: A
2 Which ocean boarders New York: A) Pacific B) Baltic C) Atlantic D) Mediterranean
Enter your answer: B
3 Which bridge is not in California: A) Golden Gate B) Dumbarton C) Brooklyn D) Carquinez
Enter your answer: C
4 The highest hand in poker is A) Straight Flush B) Four of a kind C) Full House D) Royal Flush
Enter your answer: D
5 The game of Baseball has A) 9 innings B) 4 quarters C) 6 sets D) 2 periods
Enter your answer: X
Error!!!Response shoulb A,B,C or D.Re-enter!!!
5 The game of Baseball has A) 9 innings B) 4 quarters C) 6 sets D) 2 periods
Enter your answer: A
6 The most populated city in the USA is A) Los Angeles B) San Francisco C) New York City D) Chicago
Enter your answer: B
7 The world city with the greatest population is A) Tokyo B) Delhi C) Guangzhou D) Karachi
Enter your answer: C
8 The longest river in the world is A) Mississippi B) Nile C) Lena D) Yangtze
Enter your answer: D

1 answer A incorrect
2 answer B incorrect
3 answer C correct
4 answer D correct
5 answer A correct
6 answer B incorrect
7 answer C incorrect
8 answer D incorrect
Your missed 5 questions