Assignment 1 Question 2 & 3

I have had some problems posting on the my.unisa boards so decided to transfer the discussion here.

The OP asked the following questions

K LUMAMBA

Please guys any one who has an idea about question 3, which code to compare the two input and mark, and question 4, how to number the lines.

Please assist.

(2009-08-18 12:01)

Chris Botha

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Far and away the best prize that life has to offer is the chance to work hard at work worth doing.
Theodore Roosevelt

Question 3

Basically what I did was read the whole memorandum into an array and then use the array to compare the characters to the individual characters read one by one from the answer file intil I got to the last answer.

Something like this:

Language: C++
// Read in all the correct answers into an array.
 
 for(int i = 0; i < ARRAY_SIZE; i++)
 
correctAnswerFile >> correctAnswerArray[i];

I then used a while loop to test for the end of file and compare and record the correct answers.

Finally, I used an if loop to test for the end of the answers using the ARRAY_SIZE constant for the test. In this cast the size is 50. If true, the program then reads the student ID and Name into two seperate variables and everything is then sent to the output file report.dat

The answer counter andd array counter is then zero'd and ready for the next student's info.

Something like this:

Language: C++
// Begin comparing the student answers to the memorandum answers in booklet.dat
 
while(!studentAnswerFile.eof())
 
{
 
char studentAnswer;
 
studentAnswerFile>> studentAnswer;  //read the character into the variable
 
if(studentAnswer == correctAnswerArray[studentAnswerCounter++]) //compare answers
 
numberCorrectAnswers++; //add a mark
 
if(studentAnswerCounter == ARRAY_SIZE) //check for end of one student';s answers.
 
{

That's about it. the rest of the function does a straighforward output to the report.dat file and that's it. Remember to zero the studentAnswerCounter and numberCorrectAnswers variables.

Hope this helps.

Chris Botha

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Far and away the best prize that life has to offer is the chance to work hard at work worth doing.
Theodore Roosevelt

Question 4

numbering the lines is pretty easy.

Language: C++
//Add the leading text and line number to the file and screen
   fOut<<count<<": ";
   cout<<count<<": ";

will work fine, just don't add an endl at the end and the line will be ready for the text.
Remember to number each line just before adding the text to the file or screen.
Do not try to add all the numbers first and then tthe text, it should all be done line by line.

Here are the test for the loops I used in my function

Language: C++
fIn.get(next);
 
while(! fIn.eof()) //Test for the end of the file
 
while(isspace(next)) //Remove the leading spaces
 
 
while(next != ';\n';) //Test for end of the line
 
if (fIn.eof()) //Tests for end of the file
break; //Break the while loop if eof true

Chris Botha

=============================
Far and away the best prize that life has to offer is the chance to work hard at work worth doing.
Theodore Roosevelt