Constants that Control How Files Are Opened - C++ File Stream

C++ examples for File Stream:stream

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Introduction

Flag Meaning
ios_base::app Seek to end-of-file before each write.
ios_base::ate Seek to end-of-file immediately after opening the file, if it exists.
ios_base::binary Open file in binary mode (alternative is text mode).
ios_base::in Open file for input (implied for istream).
ios_base::out Open file for output (implied for ostream).
ios_base::trunc Truncate file, if it exists (default for ostream).

The following StreamOutput program opens the file MyName.txt and then writes text to that file:

Demo Code

#include <fstream> 
using namespace std; 

int main(int nNumberofArgs, char* pszArgs[]) 
{ 
   ofstream my("MyName.txt"); 
   my << "this is a test\n" 
      << "some text" 
      << endl; /* w w  w.ja va 2 s  . c o  m*/
   return 0; 
}

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