Thread: Comparing Arrays question

while ( your_answers != 'a' && 'b' && 'c' && 'd')

didn't work
........

i am studying, i dont learn well by book

Code:

and the book assigned for this class doesnt have anything on validation


for (count = 0; count<=size-1; count++)
	{
		cin>> your_answers[count];
		while (your_answers[count] != 'a' && your_answers != 'b' && your_answers != 'c' && your_answers != 'd')
        {
         cout<< "invalid answer";
         cin>> your_answers[count];
        
        } 
       
	}

thats were im at, now wat the heck am i doin wrong?

Originally Posted by taugust7

Code:

and the book assigned for this class doesnt have anything on validation


for (count = 0; count<=size-1; count++)
	{
		cin>> your_answers[count];
		while (your_answers[count] != 'a' && your_answers != 'b' && your_answers != 'c' && your_answers != 'd')
        {
         cout<< "invalid answer";
         cin>> your_answers[count];
        
        } 
       
	}

thats were im at, now wat the heck am i doin wrong?

As for what you are doing wrong, check out the line with the while loop in it (while (your_answers[count] != 'a' && your_.....)- You have the first evaluation right, but the second third and fourth are wrong. You forgot to add [count] to the end of 'your_answers'.

So it would look like this: while (your_answers[count] != 'a' && your_answers[count] != 'b' && your_answers[count] != 'c' && your_answers[count] != 'd'){}

This is the last bit of (whole) code I'm giving you. From now on you need to try to do this yourself. It's really not very complex stuff:

Code:

#include <iostream>

using namespace std;

int main()
{       
	int count, correct = 0;          
	const int size = 20;
	char your_answers[size];
	char answers[size] = {'b','d','a','a','c','a','b','a','c','d','b','c','d','a','d','c','c','b','d','a'};

	cout<< " Please enter the students answers. \n" ;

	for (count = 0; count<=size-1; count++)
	{
		cin >> your_answers[count];

		while(your_answers[count] != 'a' && your_answers[count] != 'b' && your_answers[count] != 'c' && your_answers[count] != 'd')
		{
			cout << "(" << your_answers[count] << ") Your answer is not an appropriate one. Please try again." << endl;
			cin >> your_answers[count];
		}
	}

	for (count=0; count<=size-1;count++)
	{
		if (answers[count] == your_answers[count])
				   correct += 1; //If they got this one right, then add one to 'correct'.
	}

	if(correct >= 15) //They got 15 or higher right
		 cout << "\nYou passed the test. Congratulations." << endl;
	else
		 cout << "\nYou're a failure." << endl;

	cout << "You got " << correct << " out of 20 correct." << endl;

	cout << endl; //Make a new line.

	for (count = 0; count<=size-1; count++)
	{
		cout << "Correct Answer: " << answers[count] << " | Your answer: " << your_answers[count];
		if (answers[count] == your_answers[count]) //It's correct;
			cout << " [CORRECT]." << endl;
		else
			cout << " [WRONG]." << endl;
	}

	system("PAUSE");

return 0;
}

If you can't use the "system("PAUSE")" line, then just remove it.