/* The following code example is taken from the book

* "The C++ Standard Library - A Tutorial and Reference, 2nd Edition"

* by Nicolai M. Josuttis, Addison-Wesley, 2012

*

* (C) Copyright Nicolai M. Josuttis 2012.

* 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 <iostream>

#include <string>

using namespace std;

int main (int argc, char** argv)

{

const string delims(" \t,.;");

string line;

// for every line read successfully

while (getline(cin,line)) {

string::size_type begIdx, endIdx;

// search beginning of the first word

begIdx = line.find_first_not_of(delims);

// while beginning of a word found

while (begIdx != string::npos) {

// search end of the actual word

endIdx = line.find_first_of (delims, begIdx);

if (endIdx == string::npos) {

// end of word is end of line

endIdx = line.length();

}

// print characters in reverse order

for (int i=endIdx-1; i>=static_cast<int>(begIdx); --i) {

cout << line[i];

}

cout << ' ';

// search beginning of the next word

begIdx = line.find_first_not_of (delims, endIdx);

}

cout << endl;

}

}