// Program to report the length of the longest and shortest string
// introduced by the user
#include <iostream>
#include <string>
#include <list>

using std::cout;
using std::cin;
using std::endl;
using std::string;
using std::list;

int main()
{
	// ask the user for a set of strings
	cout << "Please introduce a phrase or any kind of words (at least 2 words)." << endl
		 << "Do it, followed by an eof (ctrl + z):" << endl;

	// list and strings where the longest and shortest
	// word will be stored
	list<string> words;
	string word, long_w, short_w;

	// read the words until you find an eof
	// invariant: words contains all word readed so far
	while(cin >> word)
		words.push_back(word);
	
	// create an iterator, itr, pointing to the first element in words list
    // and a duplicate, jtr, positioned in the second element
	typedef list<string>::iterator list_itr;
	list_itr itr = words.begin();
	list_itr jtr = itr;
	++jtr;

	// we compare the first two elements.
	// The longest is stored into long_w,
	// the shortest into short_w.
	long_w = *itr;
	short_w = *jtr;
	string::size_type l_size = long_w.size();
	string::size_type sh_size = short_w.size();
	if(sh_size > l_size){
		long_w = *jtr;
		short_w = *itr;
		l_size = long_w.size();
		sh_size = short_w.size();
	}
	// I don't know why I can't make something like
	// itr += 2;
	// Pls explain me how can I do this better,
	// a double ++itr looks very ugly.
	++itr; ++itr;

	// compare the size of the rest of the words
	// invariant: itr elements compared so far
	for(; itr != words.end(); ++itr){
		string aux_w = *itr;
		if(aux_w.size() > l_size){
			long_w = aux_w;
			l_size = long_w.size();
		}else{
			if(aux_w.size() < sh_size){
				short_w = aux_w;
				sh_size = short_w.size();
			}
		}
	}

	// output the results
	cout << "The longest word is: " << long_w << endl
		 << "The shortest word is: " << short_w << endl;

	return 0;
}

// Program to report the length of the longest and shortest string// introduced by the user#include <iostream>#include <string>using std::cout;using std::cin;using std::endl;using std::string;int main(){	// ask the user for a set of strings	cout << "Please introduce a phrase or any kind of words (at least 2 words)." << endl		 << "Do it, followed by an eof (ctrl + z):" << endl;	// list and strings where the longest and shortest	// word will be stored	string short_w, long_w, word;	// read the first word introduced and save it	// in the long_w and short_w variables.	// This is because if just one word is introduced,	// the longest and shortest string will be the same.	cin >> short_w;	long_w = short_w;	// read the rest of the words until you find an eof	while(cin >> word){		if(word.size() > long_w.size())			long_w = word;		if(word.size() < short_w.size())			short_w = word;	}	// output the results	cout << "The longest word is: " << long_w << endl		 << "The shortest word is: " << short_w << endl;	return 0;}