Quiz or test program help needed

Question

5.00/5 (2 votes)

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Hello all,

First off, I'll just let you guys know that I'm really new at this.

I need some help with a simple C++ program using arrays and loops to create a 20 question quiz. The only thing the program needs to accomplish is allow the user to enter 20 multiple choice answers A,B,C, or D and compare the user entered answers to a correct set of answers to calculate a percentage of correct answers entered. If anyone could just point me in the right direction, or give me a quick example of what I should have, that would be greatly appreciated.

This is what I have so far.. but its not much.

#include <iostream>
using namespace std;

int main()
{
	const int NUM_QUESTIONS = 20;			// Number of Questions
	char user_answers[NUM_QUESTIONS];		// Array with 20 elements
	char correct_answers[NUM_QUESTIONS];
	int count;								// Loop counter variable 
	int correct;
	char correct_answers[count] = {B, D, A, A, C, A, B, A, C, D, B, C, D, A, D, C, C, B, D, A} 

	cout << "\t\t*******************************\t\t\n";
	cout << "\t\t*****Driver's License Exam*****\t\t\n";
	cout << "\t\t*******************************\t\t\n\n";


	for (count = 0; count < NUM_QUESTIONS; count++)
	{
		cout << (count + 1) << ". ";
		cin >> user_answers[count];
	}
	
	if (user_answers[count]==correct_answers[count])
	{
	correct++;
	}
	
	cout << endl; 
	cout << correct;

	
	return 0;
}

Thanks

Posted 31-Jul-08 13:13pm

the oso

Updated 31-May-10 5:27am

Moak

v3

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2 solutions

Solution 3

Something like this

const int NUM_QUESTIONS = 20;		// Number of Questions
char user_answers[NUM_QUESTIONS];	// Array with 20 elements
char correct_answers[] = {"BDAACABACDBCDADCCBDA"}; 
int count;				// Loop counter variable 

int correct;

cout << "\t\t*******************************\t\t\n";
cout << "\t\t*****Driver's License Exam*****\t\t\n";
cout << "\t\t*******************************\t\t\n\n";

correct = 0;
for (count = 0; count < NUM_QUESTIONS; count++)
{
	char answer;

	do
	{
		cout << (count + 1) << ". ";
		cin >> answer;
		answer = toupper(answer);
		if (answer < 'A' || answer > 'D')
			answer = '?';
		cout << endl; 
	} while (answer == '?');
	user_answers[count] = answer;

	if (user_answers[count]==correct_answers[count])
	{
		correct++;
	}
}

cout << endl; 
cout << correct << " answers correct" << endl;

You probably need to add some fancy bits around the repeat of the question but this should cover the basics.

Posted 31-May-10 2:25am

Richard MacCutchan

Comments

issa_mus 8-Jul-10 20:39pm

Reason for my vote of 1
i think the above code
is very easy

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hoxsiew · Accepted Answer · 2008-08-03T04:59:00

<br />int count; // Loop counter variable<br />int correct;<br />char correct_answers[count] = {B, D, A, A, C, A, B, A, C, D, B, C, D, A, D, C, C, B, D, A}<br />

This can only cause problems. correct_answers[count] should probably be correct_answers[NUM_QUESTIONS] since count is not initialized.