Версия для печати темы
Нажмите сюда для просмотра этой темы в оригинальном формате
Форум программистов > Центр помощи > [C++] Сортировка


Автор: Henry 6.12.2007, 19:38
Здравствуйте.

Задача:
Считать из текстового файла все слова и отсортировать их в массив.
Сортировать по частоте употребления, т.е. какие слова чаще встречаются в текстовом файле.

Мне уже через день сдавать лабу, помогите пожалуйста.
Только желательно сделать лабу попроще...чтобы попонятнее было или с комментариями в коде, в самых важных местах.

Автор: orthrus 7.12.2007, 08:48
Код

#include <iostream>
#include <map>
#include <fstream>
#include <iterator>
#include <utility>

using namespace std;

template <typename X, typename Y>
bool comp_pair(const pair<X,Y> &x, const pair<X,Y> &y)
{
    return x.second > y.second;
}

int main()
{
    ifstream fin("file.txt");

    map< string, int > mp;
    string tmp;
    while (fin >> tmp) mp[tmp] +=1;
    fin.close();
    map< string , int>::iterator it;
    
    for (it = mp.begin(); it != mp.end(); ++it){
        cout << it->first << "-" << it->second << " ";
        cout << "\n";
    }
    cout << endl;
        
    pair<string,int> *pr = new pair<string,int>[mp.size()];
    int i = 0;
    for (it = mp.begin(); it != mp.end(); ++it, i++){
        pr[i] = *it;
    }
    
    sort(pr,pr+mp.size(),comp_pair<string,int>);
    for (i = 0; i<mp.size(); ++i){
        cout << pr[i].first << "-" << pr[i].second << " ";
        cout << "\n";
    }
    cout << endl;    

    return 0;
}


Автор: Henry 7.12.2007, 17:07
Чё то не компилируется( 
Кидаю ниже код:
Код

------ Build started: Project: laba2, Configuration: Debug Win32 ------
Compiling...
laba2.cpp
c:\documents and settings\dima\мои документы\visual studio 2005\projects\laba2\laba2\laba2.cpp(18) : error C2679: binary '>>' : no operator found which takes a right-hand operand of type 'std::string' (or there is no acceptable conversion)
        e:\microsoft visual studio 8\vc\include\istream(1137): could be 'std::basic_istream<_Elem,_Traits> &std::operator >><std::char_traits<char>>(std::basic_istream<_Elem,_Traits> &,signed char *)'
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        e:\microsoft visual studio 8\vc\include\istream(1139): or 'std::basic_istream<_Elem,_Traits> &std::operator >><std::char_traits<char>>(std::basic_istream<_Elem,_Traits> &,signed char &)'
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        e:\microsoft visual studio 8\vc\include\istream(1141): or 'std::basic_istream<_Elem,_Traits> &std::operator >><std::char_traits<char>>(std::basic_istream<_Elem,_Traits> &,unsigned char *)'
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        e:\microsoft visual studio 8\vc\include\istream(1143): or 'std::basic_istream<_Elem,_Traits> &std::operator >><std::char_traits<char>>(std::basic_istream<_Elem,_Traits> &,unsigned char &)'
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        e:\microsoft visual studio 8\vc\include\istream(155): or 'std::basic_istream<_Elem,_Traits> &std::basic_istream<_Elem,_Traits>::operator >>(std::basic_istream<_Elem,_Traits> &(__cdecl *)(std::basic_istream<_Elem,_Traits> &))'
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        e:\microsoft visual studio 8\vc\include\istream(161): or 'std::basic_istream<_Elem,_Traits> &std::basic_istream<_Elem,_Traits>::operator >>(std::basic_ios<_Elem,_Traits> &(__cdecl *)(std::basic_ios<_Elem,_Traits> &))'
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        e:\microsoft visual studio 8\vc\include\istream(168): or 'std::basic_istream<_Elem,_Traits> &std::basic_istream<_Elem,_Traits>::operator >>(std::ios_base &(__cdecl *)(std::ios_base &))'
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        e:\microsoft visual studio 8\vc\include\istream(175): or 'std::basic_istream<_Elem,_Traits> &std::basic_istream<_Elem,_Traits>::operator >>(std::_Bool &)'
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        e:\microsoft visual studio 8\vc\include\istream(194): or 'std::basic_istream<_Elem,_Traits> &std::basic_istream<_Elem,_Traits>::operator >>(short &)'
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        e:\microsoft visual studio 8\vc\include\istream(228): or 'std::basic_istream<_Elem,_Traits> &std::basic_istream<_Elem,_Traits>::operator >>(unsigned short &)'
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        e:\microsoft visual studio 8\vc\include\istream(247): or 'std::basic_istream<_Elem,_Traits> &std::basic_istream<_Elem,_Traits>::operator >>(int &)'
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        e:\microsoft visual studio 8\vc\include\istream(273): or 'std::basic_istream<_Elem,_Traits> &std::basic_istream<_Elem,_Traits>::operator >>(unsigned int &)'
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        e:\microsoft visual studio 8\vc\include\istream(291): or 'std::basic_istream<_Elem,_Traits> &std::basic_istream<_Elem,_Traits>::operator >>(long &)'
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        e:\microsoft visual studio 8\vc\include\istream(309): or 'std::basic_istream<_Elem,_Traits> &std::basic_istream<_Elem,_Traits>::operator >>(__w64 unsigned long &)'
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        e:\microsoft visual studio 8\vc\include\istream(329): or 'std::basic_istream<_Elem,_Traits> &std::basic_istream<_Elem,_Traits>::operator >>(__int64 &)'
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        e:\microsoft visual studio 8\vc\include\istream(348): or 'std::basic_istream<_Elem,_Traits> &std::basic_istream<_Elem,_Traits>::operator >>(unsigned __int64 &)'
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        e:\microsoft visual studio 8\vc\include\istream(367): or 'std::basic_istream<_Elem,_Traits> &std::basic_istream<_Elem,_Traits>::operator >>(float &)'
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        e:\microsoft visual studio 8\vc\include\istream(386): or 'std::basic_istream<_Elem,_Traits> &std::basic_istream<_Elem,_Traits>::operator >>(double &)'
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        e:\microsoft visual studio 8\vc\include\istream(404): or 'std::basic_istream<_Elem,_Traits> &std::basic_istream<_Elem,_Traits>::operator >>(long double &)'
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        e:\microsoft visual studio 8\vc\include\istream(422): or 'std::basic_istream<_Elem,_Traits> &std::basic_istream<_Elem,_Traits>::operator >>(void *&)'
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        e:\microsoft visual studio 8\vc\include\istream(441): or 'std::basic_istream<_Elem,_Traits> &std::basic_istream<_Elem,_Traits>::operator >>(std::basic_streambuf<_Elem,_Traits> *)'
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        while trying to match the argument list '(std::ifstream, std::string)'
c:\documents and settings\dima\мои документы\visual studio 2005\projects\laba2\laba2\laba2.cpp(18) : fatal error C1903: unable to recover from previous error(s); stopping compilation
Build log was saved at "file://c:\Documents and Settings\Dima\Мои документы\Visual Studio 2005\Projects\laba2\laba2\Debug\BuildLog.htm"
laba2 - 2 error(s), 0 warning(s)
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========


Powered by Invision Power Board (http://www.invisionboard.com)
© Invision Power Services (http://www.invisionpower.com)