basic_fstream Constructor

To construct an object of basic_ifstream for input and output operations.

basic_fstream();

explicit basic_fstream (const char *s, ios_base::openmode = ios_base::in | ios_base::out);

Remarks

The basic_fstream class is derived from basic_iostream and a basic_filebuf object is initialized at construction.

Listing: Example of basic_fstream:: basic_fstream() usage

// The ewl-test file contains originally
// CodeWarrior "Software at Work"

#include <iostream>
#include <fstream> 
#include <cstdlib>

char inFile[] = "ewl-test";

int main()
{
using namespace std;
   fstream inOut(inFile, ios::in | ios::out);
   if(!inOut.is_open()) 
      {cout << "Could not open file"; exit(1);}

   char str[] = "\n\tRegistered Trademark";
   char ch;

   while((ch = inOut.get())!= EOF)
   {
      cout << ch;
   }

   inOut.clear();
   inOut << str;
   inOut.close();

   return 0;
}

Result:

CodeWarrior "Software at Work"

The File now reads:

CodeWarrior "Software at Work"

Registered Trademark