#include <iostream>

#include <string>

#include <fstream>

#include <ctype.h>

#include <ctime>

#include <set>

int main( int argc, char *argv[] )

{

/*

if( argc < 2 )

{

std::cerr << "supply a path to a text file" << std::endl;

return 1;

}

*/

int start_time = clock();

std::set<std::string> words;

std::string word;

//const std::string file_path = argv[1];

const std::string file_path = "doves.txt";

std::ifstream text_file( file_path );

if( text_file.is_open() )

{

std::string line;

while( getline( text_file, line ) )

{

for( auto c = line.begin(); c != line.end(); ++c )

{

if( isalpha( *c ) || *c == '\'' )

{

word += *c;

}

else

{

if( word.size() > 0 )

{

words.insert( word );

word = "";

}

}

}

}

std::cout << "{ ";

for( auto it = words.begin(); it != words.end(); ++it )

{

std::cout << *it << ", ";

}

std::cout << "\b\b }" << std::endl;

std::cout << "unique words: " << words.size() << std::endl;

std::cout << "set size in bytes: " << sizeof words << " bytes" << std::endl;

text_file.close();

}

else

{

std::cerr << "couldn't open file for reading: " << argv[1] << std::endl;

return 1;

}

int stop_time = clock();

float elapsed_time = (float)(stop_time - start_time) / CLOCKS_PER_SEC;

std::cout << "elapsed time: " << elapsed_time << "s" << std::endl;

return 0;

}