Thread: Functions and Creating Files

It's pretty straightforward, just open an output file. If it doesn't exist then the program will attempt to create it.

Code:

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

int main() 
{
  char ch;
  string fileName, fileContents;
  ifstream readFile;
  ofstream writeFile;

  cout<<"Enter a file to create (ex. somefile.txt): ";
  getline ( cin, fileName );
  writeFile.open ( fileName.c_str() );

  if ( writeFile.good () ) {
    cout<<"File opened\nEnter a string to place in the file: ";
    getline ( cin, fileContents );
    writeFile<<fileContents;
    writeFile.close();
    cout<<"Would you like to view the file? (y/n): ";
    if ( ( ch = cin.get() ) == 'y' ) {
      readFile.open ( fileName.c_str() );
      getline ( readFile, fileContents );
      cout<<fileContents<<"\n";
      readFile.close();
    }
    else if ( ch == 'n' )
      cout<<"Have a nice day!\n";
    else
      cout<<"Invalid input\n";
  }
  else
    cerr<<"File could not be opened\n";
  return 0;
}

-Prelude

Prelude's code is excellent.

For those using Borland:

#include <conio.h>

and

add a getch(); statement preceding return 0; at the end of main().

(Just in case you want to play with it...)

Some may not be aware...