I'm writing a beginner program that takes a text file of 10 trivia questions and answers, reads the file, puts the questions and answers into an array, and then uses the questions for a trivia game.
Currently, I'm having an issue reading the file into the array. Only the first line of the file is being read.
I'm new to debugging, but I tried to rewrite the program with Vectors and had the same issue.
Here is the trivia file (the number at the end of the answers is the correct answer):
The Gettysburg Address
The US Declaration of Independence
The Magna Carta
The US Bill of Rights
2
(2) Who said "A billion dollars isn't worth what it used to be"?
J. Paul Getty
Bill Gates
Warren Buffet
Henry Ford
1
(3) What number does "giga" stand for?
One thousand
One million
One billion
One trillion
3
(4) What number is 1 followed by 100 zeros?
A quintillion
A googol
A moogle
A septaquintillion
2
(5) Which of the planets is closest in size to our moon?
Mercury
Venus
Mars
Jupiter
1
(6) What do you call a group of geese on the ground?
skein
pack
huddle
gaggle
4
(7) What do you call a group of geese in the air?
skein
pack
huddle
gaggle
1
(8) Talk show host Jerry Springer was the mayor of this city.
Chicago
Indianapolis
Cincinnati
Houston
3
(9) On a standard telephone keypad, the letters T, U, and V are matched to what number?
5
6
7
8
4
(10) Crickets hear through this part of their bodies.
Head
Knees
Ears
Tail
2
Here is my program currently:
#include <iostream>
#include <string>
#include <fstream>
#include <iomanip>
using namespace std;
//Question class
class Question{
private:
string triviaQuestion;
string answer1;
string answer2;
string answer3;
string answer4;
int correctAnswer; //1,2,3 or 4
public:
Question();
//mutator functions
void setTriviaQuestion(string);
void setAnswer1(string);
void setAnswer2(string);
void setAnswer3(string);
void setAnswer4(string);
void setCorrectAnswer(int);
//accessor functions
string getTriviaQuestion();
string getAnswer1();
string getAnswer2();
string getAnswer3();
string getAnswer4();
int getCorrectAnswer();
};
//Question class member functions
Question::Question(){
//initialize member variables
correctAnswer = 0;
triviaQuestion = " ";
answer1 = " ";
answer2 = " ";
answer3 = " ";
answer4 = " ";
}
void Question::setTriviaQuestion(string question){
triviaQuestion = question;
}
void Question::setAnswer1(string option) {
answer1 = option;
}
void Question::setAnswer2(string option) {
answer2 = option;
}
void Question::setAnswer3(string option) {
answer3 = option;
}
void Question::setAnswer4(string option) {
answer4 = option;
}
void Question::setCorrectAnswer(int number) {
correctAnswer = number;
}
string Question::getTriviaQuestion(){
return triviaQuestion;
}
string Question::getAnswer1() {
return answer1;
}
string Question::getAnswer2() {
return answer2;
}
string Question::getAnswer3() {
return answer3;
}
string Question::getAnswer4() {
return answer4;
}
int Question::getCorrectAnswer() {
return correctAnswer;
}
//main function
int main() {
//variables
int playerOneScore = 0;
int playerTwoScore = 0;
string holder = " ";
const int ARRAY_SIZE = 10;
Question triviaInfo[ARRAY_SIZE];
//check for a file's existence before opening it
ifstream dataFile;
dataFile.open("trivia.txt");
if (dataFile.fail()){
//The file does not exist
cout << "ERROR: Cannot open trivia File.";
}
else{
//the file already exists
//get the data from the file and put into the Question array
//for each element of the array
int fiveLineCounter = 0;
int arrayCounter = 0;
while (getline(dataFile, holder)){
cout << holder << endl; // test to see what's being entered
if (fiveLineCounter == 0){
triviaInfo[arrayCounter].setTriviaQuestion(holder);
fiveLineCounter++;
}
if (fiveLineCounter == 1){
triviaInfo[arrayCounter].setAnswer1(holder);
fiveLineCounter++;
}
if (fiveLineCounter ==2){
triviaInfo[arrayCounter].setAnswer2(holder);
fiveLineCounter++;
}
if (fiveLineCounter == 3){
triviaInfo[arrayCounter].setAnswer3(holder);
fiveLineCounter++;
}
if (fiveLineCounter == 4){
triviaInfo[arrayCounter].setAnswer4(holder);
fiveLineCounter++;
}
if (fiveLineCounter == 5){
triviaInfo[arrayCounter].setCorrectAnswer(stoi(holder));
arrayCounter++;
fiveLineCounter = 0;
}
}
}
return 0;
}
When I run the program, this is the current output:
(1) What famous document begins: "When in the course of human events..."?
Process finished with exit code 0
Would really appreciate any help or pointers on how to fix this. Thank you!
fiveLineCounter
starts as zero. So if (fiveLineCounter == 0){
check is true, the code calls setTriviaQuestion(holder)
and increments fiveLineCounter
; it's now 1
.
Then the next check if (fiveLineCounter == 1){
is true, so the code calls setAnswer1(holder)
(with the same line in holder
) and and increments fiveLineCounter
; it's now 2
.
Then the next check if (fiveLineCounter == 2){
is true, ...
This continues until setCorrectAnswer(stoi(holder))
. Whereby stoi(holder)
throws an exception, because the contents of holder
(still the first line of the file) can't be parsed as an integer.