/* The following code example is taken from the book
* "The C++ Standard Library - A Tutorial and Reference"
* by Nicolai M. Josuttis, Addison-Wesley, 1999
*
* (C) Copyright Nicolai M. Josuttis 1999.
* Permission to copy, use, modify, sell and distribute this software
* is granted provided this copyright notice appears in all copies.
* This software is provided "as is" without express or implied
* warranty, and with no claim as to its suitability for any purpose.
*/
#include
#include
#include
using namespace std;
bool bothSpaces (char elem1, char elem2)
{
return elem1 == ' ' && elem2 == ' ';
}
int main()
{
// don't skip leading whitespaces by default
cin.unsetf(ios::skipws);
/* copy standard input to standard output
* - while compressing spaces
*/
unique_copy(istream_iterator(cin), // beginning of source: cin
istream_iterator(), // end of source: end-of-file
ostream_iterator(cout), // destination: cout
bothSpaces); // duplicate criterion
}
/*
a
a
Terminate batch job (Y/N)? n
*/