I was just wondering if someone could either show me how to open up a text file, make alterations to it, save it, etc. etc. or point me in the direction of some internet resources that could. BTW, im working out of VC++ 6.0 in the Win32 environment. (not sure if you really needed to know that, but I thought I''d say it anyway :D ) Thanks in advance ! -- mesHead.

If you''re using VC++ 6, go into MSDN (the help library) and search for these functions.

fopen
fclose
fread
fwrite
fgets
fputs

just something to start you off.

-Mezz

if you know C++ output to and input from a file are very similar to writing to the screen. You can use cin and cout to do it if you are trying to write to a text file. And do you want to do random access I/O.

Well this is how you do it.

#include
#include //for file i/o

//to open a file for input

ifstream in;

in.open("filename.txt"); //"in" can be replaced by any name and filename.txt is the name of the file

char buf[500];
in >> buf; //to read from the file

in.close(); //to close the file

//for output

ofstream out;

out.open("filename.txt"); //same as above

//to open for both output and input
fstream both;

both.open("filename.txt");



hope that helped

Matthew
WebMaster
www.Matt-Land.com

if you know C++ output to and input from a file are very similar to writing to the screen. You can use cin and cout to do it if you are trying to write to a text file. And do you want to do random access I/O.

Well this is how you do it.

#include
#include //for file i/o

//to open a file for input

ifstream in;

in.open("filename.txt"); //"in" can be replaced by any name and filename.txt is the name of the file

char buf[500];
in >> buf; //to read from the file

in.close(); //to close the file

//for output

ofstream out;

out.open("filename.txt"); //same as above

out << buf;

//to open for both output and input
fstream both;

both.open("filename.txt");

both << buf;
botu >> buf;

hope that helped

Matthew
WebMaster
www.Matt-Land.com

If you want to go the straight "C" route, the above posts are perfect. If you want to try some C++ / MFC, try looking at the CFile, CStdioFile, and CString items in the MSDN. Here is quite snippit of opening a file with CStdioFile

  // Create our file object and open it for readingCStdioFile inFile("myfile.txt",CFile::modeRead);// Create our buffer. // A CString is just like a String in VB or a// String with no set limitCString buffer;// Read in until we hit a new lineinFile.ReadString(buffer);// Now buffer holds information from the text file// Lets reset our buffer to hold a sentence we want to outputbuffer = "my this is fun";// Now write our bufferinFile.WriteString(buffer);// We are all done, close the fileinFile.Close();  

Hope this helps.

Kevin =)

-----------------------------
kevin@mayday-anime.com
http://www.dainteractiveonline.com

Ack, don''t use c++ stream i/o..it''s wicked slow Or so I read somewhere hehe...I reckon Paul Pedriana (a la Maxis) had some graphs showing this off.
http://www.ccnet.com/~paulp/

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