Reading text file in VC++

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Hello every one,
I am new in C++ and I have a new project.
I have a text file with numbers that are coordinates x,y
The text files´s format looks like this:
X Y

234 5678
243 3456
193 235
1234 345
and so on
Steps,
1.- Put all this file in a buffer memory (unsigned char inbuffer [2000],
2.- Display each two coordinates in two text box one for X and one for Y (I dont´t know how to do this)
3.- inbuffer [0] = outbuffer[0]
inbuffer [1] = outbuffer[1]
4.-increment inbuffer + 2 for next two coordinates
5.-Put this data in USB (Resolved)
6.-Microcontroller sends ready bit to receive more data (resolved)
7.-Repeat from step 2 until all data is sended.
I really appreciate your help with a little code.
Regards
Carlos

Posted 25-Jul-10 15:50pm

molocho

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SnowHow 26-Jul-10 8:45am

Is the unsigned char buffer dictated by the "requirements" ? I can see this causing you difficulty since the max int value in a single unsigned char is 255(0xFF). Is this a binary file or a text file?

molocho 26-Jul-10 10:15am

Thanks a lot for your comment.
Well, i put this instruction just as an example, of course buffer must contain the whole text file. Long time ago I did programming in assembler so blocks of memory was easy to implement, as big as I want. Manipulating data inside this blocks was very easy, today, I don´t know how to do this with VC++. I did the same program I want to implement now, displaying boxes with coord x,y, inc and dec coords, sending data outside via paralell port into a microcontroller. All this made with MASM 611. I hope someone can give me some clues to start my job in VC++.

ThatsAlok 27-Jul-10 5:41am

CStdioFile::Read, can help you read entire block in one go!

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«_Superman_» · Answer 1 · 2010-07-25T18:52:00

Solution 1

Use ifstream::open to open the file in read mode.
Use getline to read the file one line at a time.
Use strtok_s to split each line into X and Y with space as the delimiter.

Posted 25-Jul-10 18:52pm

«_Superman_»

molocho · Answer 2 · 2010-07-26T03:22:00

Solution 2

I will try his way, thanks a lot
CARLOS

Posted 26-Jul-10 3:22am

molocho

**ThatsAlok** · Answer 3 · 2010-07-26T23:39:00

Solution 3

you can also check CStdioFile MFC class for accessing file.

Posted 26-Jul-10 23:39pm

ThatsAlok