Найти слова определённой длины

@Arti3DPlayer · Регистрация: 03.02.2012

Author24 — интернет-сервис помощи студентам

Как заставить это работать !

Надо найти слова определённой длинны и вывести их. длину вводят с клавиатуры. Но как вставить переменную в регулярное выражение и как вывести не 1 результат !?

C++

#include <iostream>
#include <fstream>
#include <stdio.h>
#include <conio.h>
#include <regex>
#include <string>
#include <vector>
#include <iterator>
using namespace std;
 
 
 
 
 
int main()
{
    string s;
    cin>>s;
    smatch res;
    int n=5;
    regex reg("[a-zA-z]{5}");
    std::string::const_iterator xItStart = s.begin();
    std::string::const_iterator xItEnd = s.end();
    while( regex_search(xItStart, xItEnd, res, reg) ){
  cout << res[0];
  xItStart = res[1].second;
}
    getch();
    return 0;
}

@igorrr37 · 19.12.2012, 00:35

C++

#include <iostream>
#include <string>
#include <sstream>
#include <boost/regex.hpp>
 
int main ()
{
    std::string s("fgM ddD 5gh nmbv vbn bn  vVV");
    size_t length;
    std::cin >> length;
    std::stringstream ss;
    ss << "\\<[[:alpha:]]{" << length << "}\\>";
    boost::smatch res;
    boost::regex reg(ss.str());
    auto cib = s.cbegin(), cie = s.cend();
    for(; boost::regex_search(cib, cie, res, reg); cib = res[0].second)
    {
        std::cout << res[0] << std::endl;
    }
    return 0;
}

@igorrr37 · 22.12.2012, 02:03

вариации на тему

C++

#include <iostream>
#include <string>
#include <tuple>
#include <boost/regex.hpp>
#include <boost/format.hpp>
#include <boost/context/all.hpp>
namespace bctxt = boost::context;
 
bctxt::fcontext_t mainctxt, *psearchctxt;
 
void Search(intptr_t pointer)
{
    auto ptuple = (std::tuple<std::string, size_t>*) pointer;
    std::string s = std::get<0>(*ptuple);
    boost::smatch res;
    boost::regex reg((boost::format("\\<[[:alpha:]]{%1%}\\>") % std::get<1>(*ptuple)).str());
    auto cib = s.cbegin(), cie = s.cend();
    for(; boost::regex_search(cib, cie, res, reg); cib = res[0].second)
    {
        bctxt::jump_fcontext(psearchctxt, &mainctxt, (intptr_t)&res[0]);
    }
    bctxt::jump_fcontext(psearchctxt, &mainctxt, 0);
}
 
int main ()
{
    size_t length = 3;
    std::string s("fff fFF 4fg fgFF fGG");
    bctxt::guarded_stack_allocator allocator;
    size_t stacksize = bctxt::guarded_stack_allocator::default_stacksize();
    void* stackpointer = allocator.allocate(stacksize);
    psearchctxt = bctxt::make_fcontext(stackpointer, stacksize, &Search);
    auto tuple = std::make_tuple(s, length);
    boost::sub_match<std::string::const_iterator>* psubmatch = nullptr;
    while(psubmatch = (boost::sub_match<std::string::const_iterator>*)bctxt::jump_fcontext(&mainctxt, psearchctxt, (intptr_t)&tuple))
    {
        std::cout << *psubmatch << std::endl;
    }    
    psubmatch = nullptr;
    return 0;
}

@zarko97 · 29.06.2017, 02:17

igorrr37, отлично сработано!

Добавлено через 2 часа 31 минуту
igorrr37,

Код

Error(s):
/tmp/ccQ2jVVR.o: In function `boost::re_detail::perl_matcher<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::unwind_extra_block(bool)':
source.cpp:(.text._ZN5boost9re_detail12perl_matcherIN9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEESaINS_9sub_matchISC_EEENS_12regex_traitsIcNS_16cpp_regex_traitsIcEEEEE18unwind_extra_blockEb[_ZN5boost9re_detail12perl_matcherIN9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEESaINS_9sub_matchISC_EEENS_12regex_traitsIcNS_16cpp_regex_traitsIcEEEEE18unwind_extra_blockEb]+0x2c): undefined reference to `boost::re_detail::put_mem_block(void*)'
/tmp/ccQ2jVVR.o: In function `__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > boost::re_detail::re_is_set_member<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, char, boost::regex_traits<char, boost::cpp_regex_traits<char> >, unsigned int>(__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, __gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, boost::re_detail::re_set_long<unsigned int> const*, boost::re_detail::regex_data<char, boost::regex_traits<char, boost::cpp_regex_traits<char> > > const&, bool)':
source.cpp:(.text._ZN5boost9re_detail16re_is_set_memberIN9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEcNS_12regex_traitsIcNS_16cpp_regex_traitsIcEEEEjEET_SH_SH_PKNS0_11re_set_longIT2_EERKNS0_10regex_dataIT0_T1_EEb[_ZN5boost9re_detail16re_is_set_memberIN9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEcNS_12regex_traitsIcNS_16cpp_regex_traitsIcEEEEjEET_SH_SH_PKNS0_11re_set_longIT2_EERKNS0_10regex_dataIT0_T1_EEb]+0x148): undefined reference to `boost::re_detail::cpp_regex_traits_implementation<char>::transform_primary(char const*, char const*) const'
source.cpp:(.text._ZN5boost9re_detail16re_is_set_memberIN9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEcNS_12regex_traitsIcNS_16cpp_regex_traitsIcEEEEjEET_SH_SH_PKNS0_11re_set_longIT2_EERKNS0_10regex_dataIT0_T1_EEb[_ZN5boost9re_detail16re_is_set_memberIN9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEcNS_12regex_traitsIcNS_16cpp_regex_traitsIcEEEEjEET_SH_SH_PKNS0_11re_set_longIT2_EERKNS0_10regex_dataIT0_T1_EEb]+0x363): undefined reference to `boost::re_detail::cpp_regex_traits_implementation<char>::transform(char const*, char const*) const'
/tmp/ccQ2jVVR.o: In function `main':
source.cpp:(.text.startup+0x186): undefined reference to `boost::basic_regex<char, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::do_assign(char const*, char const*, unsigned int)'
source.cpp:(.text.startup+0x363): undefined reference to `boost::re_detail::perl_matcher<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::construct_init(boost::basic_regex<char, boost::regex_traits<char, boost::cpp_regex_traits<char> > > const&, boost::regex_constants::_match_flags)'
/tmp/ccQ2jVVR.o: In function `boost::re_detail::perl_matcher<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::find_imp()':
source.cpp:(.text._ZN5boost9re_detail12perl_matcherIN9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEESaINS_9sub_matchISC_EEENS_12regex_traitsIcNS_16cpp_regex_traitsIcEEEEE8find_impEv[_ZN5boost9re_detail12perl_matcherIN9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEESaINS_9sub_matchISC_EEENS_12regex_traitsIcNS_16cpp_regex_traitsIcEEEEE8find_impEv]+0x1e): undefined reference to `boost::re_detail::get_mem_block()'
source.cpp:(.text._ZN5boost9re_detail12perl_matcherIN9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEESaINS_9sub_matchISC_EEENS_12regex_traitsIcNS_16cpp_regex_traitsIcEEEEE8find_impEv[_ZN5boost9re_detail12perl_matcherIN9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEESaINS_9sub_matchISC_EEENS_12regex_traitsIcNS_16cpp_regex_traitsIcEEEEE8find_impEv]+0x2d3): undefined reference to `boost::re_detail::verify_options(unsigned int, boost::regex_constants::_match_flags)'
source.cpp:(.text._ZN5boost9re_detail12perl_matcherIN9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEESaINS_9sub_matchISC_EEENS_12regex_traitsIcNS_16cpp_regex_traitsIcEEEEE8find_impEv[_ZN5boost9re_detail12perl_matcherIN9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEESaINS_9sub_matchISC_EEENS_12regex_traitsIcNS_16cpp_regex_traitsIcEEEEE8find_impEv]+0x314): undefined reference to `boost::re_detail::put_mem_block(void*)'
source.cpp:(.text._ZN5boost9re_detail12perl_matcherIN9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEESaINS_9sub_matchISC_EEENS_12regex_traitsIcNS_16cpp_regex_traitsIcEEEEE8find_impEv[_ZN5boost9re_detail12perl_matcherIN9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEESaINS_9sub_matchISC_EEENS_12regex_traitsIcNS_16cpp_regex_traitsIcEEEEE8find_impEv]+0x770): undefined reference to `boost::re_detail::put_mem_block(void*)'
/tmp/ccQ2jVVR.o: In function `void boost::re_detail::raise_error<boost::regex_traits_wrapper<boost::regex_traits<char, boost::cpp_regex_traits<char> > > >(boost::regex_traits_wrapper<boost::regex_traits<char, boost::cpp_regex_traits<char> > > const&, boost::regex_constants::error_type)':
source.cpp:(.text._ZN5boost9re_detail11raise_errorINS_20regex_traits_wrapperINS_12regex_traitsIcNS_16cpp_regex_traitsIcEEEEEEEEvRKT_NS_15regex_constants10error_typeE[_ZN5boost9re_detail11raise_errorINS_20regex_traits_wrapperINS_12regex_traitsIcNS_16cpp_regex_traitsIcEEEEEEEEvRKT_NS_15regex_constants10error_typeE]+0xba): undefined reference to `boost::re_detail::raise_runtime_error(std::runtime_error const&)'
source.cpp:(.text._ZN5boost9re_detail11raise_errorINS_20regex_traits_wrapperINS_12regex_traitsIcNS_16cpp_regex_traitsIcEEEEEEEEvRKT_NS_15regex_constants10error_typeE[_ZN5boost9re_detail11raise_errorINS_20regex_traits_wrapperINS_12regex_traitsIcNS_16cpp_regex_traitsIcEEEEEEEEvRKT_NS_15regex_constants10error_typeE]+0xe8): undefined reference to `boost::re_detail::get_default_error_string(boost::regex_constants::error_type)'
/tmp/ccQ2jVVR.o: In function `boost::re_detail::perl_matcher<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::extend_stack()':
source.cpp:(.text._ZN5boost9re_detail12perl_matcherIN9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEESaINS_9sub_matchISC_EEENS_12regex_traitsIcNS_16cpp_regex_traitsIcEEEEE12extend_stackEv[_ZN5boost9re_detail12perl_matcherIN9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEESaINS_9sub_matchISC_EEENS_12regex_traitsIcNS_16cpp_regex_traitsIcEEEEE12extend_stackEv]+0x18): undefined reference to `boost::re_detail::get_mem_block()'
/tmp/ccQ2jVVR.o: In function `boost::re_detail::perl_matcher<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::match_match()':
source.cpp:(.text._ZN5boost9re_detail12perl_matcherIN9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEESaINS_9sub_matchISC_EEENS_12regex_traitsIcNS_16cpp_regex_traitsIcEEEEE11match_matchEv[_ZN5boost9re_detail12perl_matcherIN9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEESaINS_9sub_matchISC_EEENS_12regex_traitsIcNS_16cpp_regex_traitsIcEEEEE11match_matchEv]+0x38f): undefined reference to `boost::match_results<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > > >::maybe_assign(boost::match_results<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > > > const&)'
/tmp/ccQ2jVVR.o: In function `boost::re_detail::perl_matcher<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::match_prefix()':
source.cpp:(.text._ZN5boost9re_detail12perl_matcherIN9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEESaINS_9sub_matchISC_EEENS_12regex_traitsIcNS_16cpp_regex_traitsIcEEEEE12match_prefixEv[_ZN5boost9re_detail12perl_matcherIN9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEESaINS_9sub_matchISC_EEENS_12regex_traitsIcNS_16cpp_regex_traitsIcEEEEE12match_prefixEv]+0x190): undefined reference to `boost::match_results<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > > >::maybe_assign(boost::match_results<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > > > const&)'
collect2: error: ld returned 1 exit status

@hoggy · 30.06.2017, 08:50

Сообщение от zarko97

undefined reference

http://g.zeos.in/?q=%D1%81%2B%... 0boost&m=1

@hoggy 8739 / 4317 / 960 Регистрация: 15.11.2014 Сообщений: 9,760
	30.06.2017, 08:50	5
	Сообщение от zarko97 undefined reference http://g.zeos.in/?q=%D1%81%2B%... 0boost&m=1 0

Найти слова определённой длины

Решение