How can cin.get() != EOF work on Mac OS X (like on SunOS) ?

[dkhosh]

The following code works on SunOS but not on MacOS X. On the Mac, the second "cout <<" prints to the screen but the program quits without getting any input. Can anyone explain this? Thanks. (I've read through all the threads I could find to solve this.)

// iotest.cc
//
#include <iostream>
using std::cin;
using std::cout;
using std::endl;
 
int main()
{
    int iChar;
 
    //-------------------------------
    // This works on SunOS and MacOSX
    //-------------------------------
    cout << "\nEnter a sentence followed by <cr><ctrl-d>:" << endl;
 
    while ( ( iChar = cin.get() ) != EOF )
    {
        cout.put( iChar );
    }
    cout.put('\n');
 
    cin.clear( );
 
 
    //-------------------------------
    // This works on SunOS but not on MacOSX
    //-------------------------------
    cout << "\nEnter a sentence followed by <cr><ctrl-d>:" << endl;
 
    while ( ( iChar = cin.get() ) != EOF )
    {
        cout.put( iChar );
    }
 
    cout.put('\n');
 
    cin.clear( );
 
    return 0;
}
 

[horace1]

have a look at
http://forums.macosxhints.com/archive/index.php/t-55717.html

which discusses this problem
it appears that when CTRL/D is entered some systems "just" return EOF but OSX also closes the stdin stream (hence killing the program).