simplest way to write and read text file in c++

by BattleStar-Galactica » Sat Feb 03, 2007 8:05 am

weekend get bored

Code: Select all

#include <iostream>
#include <fstream>
#include <string>
using namespace std;

int _tmain(int argc, _TCHAR* argv[])
{
   string filename="test.txt";
   string line="hello world\r\n";
   fstream ofile(filename.c_str(),
      ios_base::out | ios_base::binary);
   if(!ofile.is_open())
    {
        cout << "Cannot Open " << filename.c_str()
             << " for writing\n";
        return 0;
    }
   for(int i=0; i<5; i++) //write 4 lines to file
      ofile.write(line.c_str(), line.length());
   ofile.close();
   return 0;
}


and read text file

Code: Select all

char FileBuffer[256];
   fstream ifile(filename.c_str(),
        ios_base::in | ios_base::binary);
   if(!ifile.is_open())
    {
        cout << "Cannot Open " << filename.c_str()
             << " for reading\n";
        return 0;
    }
   while(!ifile.eof())
   {

      ifile.getline(FileBuffer, 256);
      cout << FileBuffer << endl;
   }
   ifile.close();


seriously I dont use fstream in any of my programm, I use fopen,fread and fwrite. fstream for newbie to c++

by Dody » Thu Feb 08, 2007 6:00 pm

I suggest that you catch the exceptions while writing and reading (it is a must in java now days )
and take a look about CFile at msdn -> http://msdn2.microsoft.com/en-us/library/60fh2b6f(VS.80).aspx
it is a MFC class

have fun

by BattleStar-Galactica » Thu Feb 08, 2007 9:04 pm

by NinjaCoder » Fri Feb 09, 2007 1:09 am

C++ is way above my little mind....im still a VB noob...lol

by BattleStar-Galactica » Fri Feb 09, 2007 1:59 am

by NinjaCoder » Fri Feb 09, 2007 2:02 am

thanks for that advice man.....that sounds real good