Visual studio C++ 2008 MFC quiz app

[2kaud]

As questions.dat was being opened in create mode, its original contents have probably been deleted. You will probably have to re-create the file's content. It may be useful to mark the file as read-only once you are happy with the contents to prevent the contents from being accidentially deleted again.


And what is the contents of 'crap.txt'. Have you looked at the content outside of your program to verify it is correct? Seek does not make a file empty. It mearly adjusts the file pointer position within an opened file.

[Joe412]

sorry, i forgot to add:

keep in mind that "myFile.Seek( 0, CFile::begin );" made the whole file empty

[GCDEF]

sorry, i forgot to add:

keep in mind that "myFile.Seek( 0, CFile::begin );" made the whole file empty

No it didn't. Opening it with CFile::modeCreate emptied it.

[Joe412]

GCDEF

check the new version of the code, there is no CFille::modeCreate in it

2kaud

i made crap.txt just to test out the validity of the program, later on i will change it into questions.dat

[2kaud]

But outside of your program, what are the contents of 'crap.txt' now? Seek does not empty it! If the contents are what you expect, make the file read-only as I suggested in post #16 then your program won't be able to empty it!

[Joe412]

http://www.fileconvoy.com/dfl.php?id...7731cc62118975

can anyone see whats wrong with this? Im really trying to learn MFC and generally want to learn programming so badly

im 16 and i wish i would like to be one when i finish high-school

[2kaud]

I've looked at your question text file. IMO you would be better off using the c++ STL file fstream class and the string class as this would allow you to read each line of the text file without knowing the number of chars in each line. Using CFile and Read you need to know how many bytes to read.

[Joe412]

I've looked at your question text file. IMO you would be better off using the c++ STL file fstream class and the string class as this would allow you to read each line of the text file without knowing the number of chars in each line. Using CFile and Read you need to know how many bytes to read.

could you do something with it? i need something that works and my hands are tied

[2kaud]

could you do something with it? i need something that works and my hands are tied

Why? Is this a class assignment?

[GCDEF]

I've looked at your question text file. IMO you would be better off using the c++ STL file fstream class and the string class as this would allow you to read each line of the text file without knowing the number of chars in each line. Using CFile and Read you need to know how many bytes to read.

CStdioFile and ReadString would work too and fit his goal of trying to learn MFC.

[GCDEF]

http://www.fileconvoy.com/dfl.php?id...7731cc62118975

can anyone see whats wrong with this? Im really trying to learn MFC and generally want to learn programming so badly

im 16 and i wish i would like to be one when i finish high-school

crap.txt is empty and you're trying to read it.

[Joe412]

Why? Is this a class assignment?

Yes, and this is like a final task that would judge what grade am i going to get at the end, but i dont know how to do this because i was given the hardest one

[2kaud]

OK, right. I've downloaded your program, re-compiled it and run it. The solution creates quiz.exe in the folder quiz/debug. In this folder you have the text file questions.txt - but not crap.txt! On my system if you copy questions.txt to crap.txt in the folder quiz/debug and then run the quiz.exe program in quiz/debug as it stands, you get what you would expect. So if you now change your program to use questions.txt then it should be OK - as the program quiz.exe is in the folder quiz/debug which is also the folder where questions.txt resides.

The file you open needs to be in the same folder as the exe program you create/run - otherwise it needs to be given a path as well as a name. That's why you seem to have the problem as crap.txt is in the folder quiz/quiz!

[Joe412]

OK, right. I've downloaded your program, re-compiled it and run it. The solution creates quiz.exe in the folder quiz/debug. In this folder you have the text file questions.txt - but not crap.txt! On my system if you copy questions.txt to crap.txt in the folder quiz/debug and then run the quiz.exe program in quiz/debug as it stands, you get what you would expect. So if you now change your program to use questions.txt then it should be OK - as the program quiz.exe is in the folder quiz/debug which is also the folder where questions.txt resides.

The file you open needs to be in the same folder as the exe program you create/run - otherwise it needs to be given a path as well as a name. That's why you seem to have the problem as crap.txt is in the folder quiz/quiz!

like i said before i made crap.txt just to test out if the file imput works, i used crap.txt because i've used a different algorithm that i copied

the task was to take input from the file, copy a question to a groupbox, and then pick an asnwer A,B,C,D displayed on the left(radio). After i've picked an answer i press next and if i got the question correct i get 1 point

this of course sounds ridiculously simple, but i've had had trouble with getting input from the file to the program and it has made me miserable and sleepless(being this is day 3). Also just to let people know i know command line c++ much much much^3 better than Microsoft's MFC visual c++

this task is due to tomorow afternoon and im sure every respected programmer on this forum and i dont know how to repay them if they did this

also where can i get some c++ general training

[Joe412]

bumping