makig a Randomizes Quiz Help

**Nisheeth** · 04-05-2011

I am trying to make a simple quiz program. Well I am just a beginner at it.
Here I have deigned a simple quiz that gives the user 10 question and depending on their answer respond to them.

Code:

//Quiz program
#include <iostream>
#include <string>
#include <time.h>

using namespace std;
	
	//Arrays and Variables and Strings
	int Q[10] = {};
	float score = 0;
	string correct = "This is the correct answer";
	string wrong = "Sorry, this is the incorrect answer. The correct answer was ";   /*The correct option will have to be put after "<<"*/
	string divider = "--------------------------------------------------------------------------------";
	
	//Main Program
	int main ()
{
	//Timer Define
		int elapTicks;
		double elapMilli, elapSeconds, elapMinutes;
		clock_t Begin, End;															//initialize Begin and End for the timer

	//Instructions:
	cout << "There will be 10 questions each having 4 options and ONLY 1 Correct answer." << endl;
	cout << "To select the answer, type the correct option number and press ENTER/RETURN." << endl;
	cout << "ONE MARK will be provided for a correct answer and HALF A MARK [0.5] will be deducted for a wrong one."<< endl;
	cout << "No marks will be deducted for skipping a Question." << endl << "A QUESTION CAN BE SKIPPED BY ENTERING THE OPTION NUMBER AS 0" << endl;
	cout << divider << endl << endl;
	

	//Timer Start
	 Begin = clock() * CLK_TCK;
	 for(int a=1; a<=10000; a++);

	//Questions:
			
		//Question 1
		cout << "1) First China War was fought between ____________" << endl;
		cout << "1.China and Britain" << endl;
		cout << "2.China and France" << endl;
		cout << "3.China and Egypt" << endl;
		cout << "4.China and Russia" << endl << endl;

			//Question 1 Answer
			cout << "Ans. ";
			cin >> Q[0];
			cout << endl << endl;
			//Question 1 Evaluation:
			if (Q[0] == 1)
			{ 
				cout << correct << endl << endl;
				score = score + 1	;
			}
			
			else if (Q[0] == 0)
				cout << "You skipped the Question" << endl << endl;
			
			else 
			{
				cout << wrong << "1. CHINA AND BRITAIN" << endl << endl;
				score = score - 0.5;
			}

			cout << divider << endl << endl;


		//Question 2:
		cout << "2)For the Olympics and World Tournaments, the dimensions of basketball court are____________" << endl;
		cout << "1.26 m x 14 m" << endl;
		cout << "2.28 m x 15 m" << endl;
		cout << "3.27 m x 16 m" << endl;
		cout << "4.28 m x 16 m" << endl << endl;

			//Question 2 Answer
			cout << "Ans. ";
			cin >> Q[1];
			cout << endl << endl;
			//Question 2 Evaluation:
			if (Q[1] == 2)
			{ 
				cout << correct << endl << endl;
				score = score + 1;
			}
			
			else if (Q[1] == 0)
				cout << "You skipped the Question" << endl << endl;

			else
			{
				cout << wrong << "2. 2.28 m x 15 m" << endl << endl;
				score = score - 0.5;
			}

			cout << divider << endl << endl;


		//Question 3:
		cout << "3)Each year World Red Cross and Red Crescent Day is celebrated on" << endl;
		cout << "1.May 8" << endl;
		cout << "2.May 18" << endl;
		cout << "3.June 8" << endl;
		cout << "4.June 18" << endl << endl;

			//Question 3 Answer
			cout << "Ans. ";
			cin >> Q[2];
			cout << endl << endl;
			//Question 4 Evaluation:
			if (Q[2] == 1)
			{ 
				cout << correct << endl << endl;
				score = score + 1;
			}
			
			else if (Q[2] == 0)
				cout << "You skipped the Question" << endl << endl;
			
			else
			{
				cout << wrong << "1. MAY 8" << endl << endl;
				score = score - 0.5;
			}


			cout << divider << endl << endl;

		//Question 4:
		cout << "4)Friction can be reduced by changing from____________" << endl;
		cout << "1.sliding to rolling" << endl;
		cout << "2.rolling to sliding" << endl;
		cout << "3.Kynetic to Dynamic" << endl;
		cout << "4.dynamic to static" << endl << endl;

			//Question 4 Answer
			cout << "Ans. ";
			cin >> Q[3];
			cout << endl << endl;
			//Question 4 Evaluation:
			if (Q[3] == 1)
			{ 
				cout << correct << endl << endl;
				score = score + 1;
			}

			else if (Q[3] == 0)
				cout << "You skipped the Question" << endl << endl;
			else 
			{
				cout << wrong << "1.SLIDING TO ROLLING" << endl << endl;
				score = score - 0.5;
			}

			cout << divider << endl << endl;


			//Question 5:
		cout << "5)Georgia, Uzbekistan and Turkmenistan became the members of UNO in_____" << endl;
		cout << "1.1991" << endl;
		cout << "2.1992" << endl;
		cout << "3.1993" << endl;
		cout << "4.1994" << endl << endl;

			//Question 5 Answer
			cout << "Ans. ";
			cin >> Q[4];
			cout << endl << endl;
			//Question 5 Evaluation:
			if (Q[4] == 2)
			{ 
				cout << correct << endl << endl;
				score = score + 1;
			}
			
			else if (Q[4] == 0)
				cout << "You skipped the Question" << endl << endl;
			
			else
			{
				cout << wrong << "2.1992" << endl << endl;
				score = score - 0.5;
			}

			cout << divider << endl << endl;

		//Question 6:
		cout << "6)During World War II, when did Germany attack France?" << endl;
		cout << "1.1940" << endl;
		cout << "2.1941" << endl;
		cout << "3.1942" << endl;
		cout << "4.1993" << endl << endl;

			//Question 6 Answer
			cout << "Ans. ";
			cin >> Q[5];
			cout << endl << endl;
			//Question 6 Evaluation:
			if (Q[5] == 1)
			{ 
				cout << correct << endl << endl;
				score = score + 1;
			}
			
			else if (Q[5] == 0)
				cout << "You skipped the Question" << endl << endl;
			
			else
			{
				cout << wrong << "2.1940" << endl << endl;
				score = score - 0.5;
			}

			cout << divider << endl << endl;


		//Question 7:
		cout << "7)Frederick Sanger is a twice recipient of the Nobel Prize for ______" << endl;
		cout << "1.Chemistry in 1958 and 1980" << endl;
		cout << "2.Physics in 1956 and 1972" << endl;
		cout << "3.Chemistry in 1954 and Peace in 1962" << endl;
		cout << "4.Physics in 1903 and Chemistry in 1911" << endl << endl;

			//Question 7 Answer
			cout << "Ans. ";
			cin >> Q[6];
			cout << endl << endl;
			//Question 7 Evaluation:
			if (Q[6] == 1)
			{ 
				cout << correct << endl << endl;
				score = score + 1;
			}
			
			else if (Q[6] == 0)
				cout << "You skipped the Question" << endl << endl;
			
			else
			{
				cout << wrong << "1.CHEMISTRY IN 1958 AND 1980" << endl << endl;
				score = score - 0.5;
			}

			cout << divider << endl << endl;


		//Question 8:
		cout << "8)Eugenics is the study of" << endl;
		cout << "1.altering human beings by changing their genetic components" << endl;
		cout << "2.people of European origin" << endl;
		cout << "3.different races of mankind" << endl;
		cout << "4.genetic of plants" << endl << endl;

			//Question 8 Answer
			cout << "Ans. ";
			cin >> Q[7];
			cout << endl << endl;

			//Question 8 Evaluation:
			if (Q[7] == 1)
			{ 
				cout << correct << endl << endl;
				score = score + 1;
			}
			
			else if (Q[7] == 0)
				cout << "You skipped the Question" << endl << endl;
			
			else
			{
				cout << wrong << "1.ALTERING HUMAN BEINGS BY CHANGING THEIR GENETIC COMPONENTS" << endl << endl;
				score = score - 0.5;
			}

			cout << divider << endl << endl;


		//Question 9:
		cout << "9)Goa Shipyard Limited (GSL) was established in ____" << endl;
		cout << "1.1955" << endl;
		cout << "2.1956" << endl;
		cout << "3.1957" << endl;
		cout << "4.1958" << endl << endl;

			//Question 9 Answer
			cout << "Ans. ";
			cin >> Q[8];
			cout << endl << endl;
			//Question 9 Evaluation:
			if (Q[8] == 3)
			{ 
				cout << correct << endl << endl;
				score = score + 1;
			}
			
			else if (Q[8] == 0)
				cout << "You skipped the Question" << endl << endl;
			
			else
			{
				cout << wrong << "3.1957" << endl << endl;
				score = score - 0.5;
			}

			cout << divider << endl << endl;



			//Question 10:
		cout << "10)Escape velocity of a rocket fired from the earth towards the moon is a velocity to get rid of the _______" << endl;
		cout << "1.Pressure of the atmosphere" << endl;
		cout << "2.Moon's gravitational pull" << endl;
		cout << "3.Centripetal force due to the earth's rotation" << endl;
		cout << "4.Earth's gravitational pull" << endl << endl;

			//Question 10 Answer
			cout << "Ans. ";
			cin >> Q[9];
			cout << endl << endl;
			//Question 10 Evaluation:
			if (Q[9] == 4)
			{ 
				cout << correct << endl << endl;
				score = score + 1;
			}
			
			else if (Q[9] == 0)
				cout << "You skipped the Question" << endl << endl;
			
			else
			{
				cout << wrong << "4.EARTH'S GRAVITATIONAL PULL" << endl << endl;
				score = score - 0.5;
			}

			
		//Timer stop:
		End = clock() * CLK_TCK;        //stop the timer
		//Thanks Note:
			cout << "---------------------------------Test Completed---------------------------------"  << endl << endl;

		//Scoring:

		cout << "Your total score was " << score << " points!" << endl;
		
			
		//Time Taken:
			
		elapTicks = End - Begin;        //the number of ticks from Begin to End
		
		elapMilli = elapTicks/1000;     //milliseconds from Begin to End
		
		elapSeconds = elapMilli/1000;   //seconds from Begin to End
		
		elapMinutes = elapSeconds/60;   //minutes from Begin to End
     
     
		 if(elapSeconds < 1)
          cout<<"\n\nYou took "<<elapMilli<<" milliseconds.";

		else if(elapSeconds == 1)
          cout<<"\n\nYou took  1 second.";
		
		else if(elapSeconds > 1 && elapSeconds < 60)
          cout<<"\n\nYou took  "<<elapSeconds<<" seconds.";
		
		else if(elapSeconds >= 60)     
          cout<<"\n\nYou took  "<<elapMinutes<<" minutes.";
			 
		
	//Terminating the Program:
	return 0;
}

I wanted to make the quiz random, like, I add 5 more questions to the list, and then the program choses any 10 of those 15 question and presents them to the user.
I am using Visual C++ in windows. Can some one please help me?
Thanks in advance.

**MK27** · 04-05-2011

You can start by making "question" a function or class so that you do not have to repeat it over and over. This will make it easy to select random questions from an array.

**Nisheeth** · 04-05-2011

Could you elaborately explain it? And I haven't learnt using classes yet.

**Nisheeth** · 04-05-2011

I studied Classes for a while and then tried to make the class question.

I used the following code:

Code:

//Arrayrs, Variables and Strings
	int x;	
	int q;
	int w;
	int e;
	int r;
	int t;
	int y;
	int u;
	int i;
	int o;
	int p;
	float score = 0;
	string correct = "This is the correct answer";
	string wrong = "Sorry, this is the incorrect answer. The correct answer was ";   /*The correct option will have to be put after "<<"*/
	string skip = "You skipped the Question";
	string divider = "--------------------------------------------------------------------------------";

//Qestion Class
class Question 
{
public:
	Question ();
	//Constructor
	~Question ();
	//Destructor

protected:
	int a, b, c, d;
	
	int number (int a);
	
	string question (char);
	
	string opt1 (char);
	
	string opt2 (char);
	
	string opt3 (char);
	
	string opt4 (char);
	
	int correct_ans (int c);
	int  ans(int c) 
	{ 
		if (b == c)
			{
				cout << correct;
				score += 1;
			}
		else if ( b == 0 )
		{
			cout << skip;
		}

		else 
		{
			cout << wrong;
			score -=0.5;
		}
	};

But after I try to compile it, I encounter "fatal error C1075: end of file found before the left brace '{' at ..............

I have made the bracket bold, the one mentioned in the error.

Please tell me what to do now, and How to use this class in my program.

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