Thread: Need help in writing a function or any of the sort!

Right away or at the end of the whole list?

Right away, you can use a loop -- keep asking until they hit upon the right answer.

At the end of the list, you'll have to keep track in some piece of data somewhere which ones they missed, and you can use that to re-read the appropriate questions.

Originally Posted by tabstop

Right away or at the end of the whole list?

Right away, you can use a loop -- keep asking until they hit upon the right answer.

At the end of the list, you'll have to keep track in some piece of data somewhere which ones they missed, and you can use that to re-read the appropriate questions.

i wanted it at the end of the first test, like after the end if they got wrongs do over the wrong questions. Im so confused.

So you'll have to keep track of previous results. You could keep track of right answers, or wrong answers, or the answers given, or score, or ... well anything really that will allow you to recreate, later, whether this question was answered correctly or not the first time.

Originally Posted by tabstop

So you'll have to keep track of previous results. You could keep track of right answers, or wrong answers, or the answers given, or score, or ... well anything really that will allow you to recreate, later, whether this question was answered correctly or not the first time.

Ok, say i keep track of the wrong questions number. My question wud be how to go back to that exact same location of the text file

Code:

char throwaway[255]; //or some large number
for (i = 0; i < wrong_question_number; i++) {
    fgets(throwaway, sizeof throwaway, file);
}

You will have to use rewind() to get back to the beginning of the file.

Originally Posted by tabstop

Code:

char throwaway[255]; //or some large number
for (i = 0; i < wrong_question_number; i++) {
    fgets(throwaway, sizeof throwaway, file);
}

You will have to use rewind() to get back to the beginning of the file.

I understand the rewing and everything, but wouldnt that start reading from the begning of the file. What if number one was correct and number three wrong. I'd have to skip those, how would i really go to number three?

Read number one and throw it away (hence the name), read number two and throw it away.

(Edit: I suppose if you don't like that idea you can get really fancy with fgetpos and fsetpos.)

Originally Posted by tabstop

Read number one and throw it away (hence the name), read number two and throw it away.

(Edit: I suppose if you don't like that idea you can get really fancy with fgetpos and fsetpos.)

Sorry tabstop, im a bit confused: would this char throwaway[255]; //or some large number
actually be the array holding the wrong numbers, their indexes?

Not in any way, shape, or form. Did you read the other line of code in my example? Did you recognize it, since I blatantly stole it from your program? What does it do there, and what will it do here?

Originally Posted by tabstop

Not in any way, shape, or form. Did you read the other line of code in my example? Did you recognize it, since I blatantly stole it from your program? What does it do there, and what will it do here?

Code:

for (i = 0; i < wrong_question_number; i++) {
    fgets(throwaway, sizeof throwaway, file);
}

I understand from this that once it has more than zero wrongs it will go into this loop, and get sentences from the file, however the throwaway is that im not really comprehending. U say it tosses the correct ones, but how?? puzzled :/

Hmmmmm why did you not copy the code that you had me delete? It wouldn't have been stealing rather it was more like collaborating. Since we worked through the whole problem together.

Originally Posted by master5001

Hmmmmm why did you not copy the code that you had me delete? It wouldn't have been stealing rather it was more like collaborating. Since we worked through the whole problem together.

Hey Matt

Are u referring to the first thread, that had malloc, and pointers on structures?

Originally Posted by blondie.365

Code:

for (i = 0; i < wrong_question_number; i++) {
    fgets(throwaway, sizeof throwaway, file);
}

I understand from this that once it has more than zero wrongs it will go into this loop, and get sentences from the file, however the throwaway is that im not really comprehending. U say it tosses the correct ones, but how?? puzzled :/

It puts them somewhere, and then you overwrite it with the next one, so it's gone!

Actually I am refering to the thread about fseek().