2 курс. Программирование на C++. Турнир 1, осень 2021

вход курсы / турниры задачи участники консоль модули компиляторы ключевые слова результаты

ru en cn

5482434

Пользователь

Марченко Михаил Алексеевич

Время

23:26<< 13.10.2021 23:26 (9 д. 23:15) 23:29>>

Обработка

23:26 ... 23:26 (3,14 сек.)

Файл

5482434.cpp (CLang++ 5.0.0 + Address Sanitizer)

Турнир

2 курс. Программирование на C++. Турнир 1, осень 2021

Задача

F: BufferedReader

Набор тестов

Ограничения

Время: 1с Память: 512Мб

Состояние [?]

CE	Ошибка компиляции

код | результаты

In file included from main.cpp:35:0:
buffered_reader.h: In member function 'int32_t BufferedReader::Read(char*, int32_t)':
buffered_reader.h:16:59: error: no match for 'operator=' (operand types are 'std::__cxx11::string {aka std::__cxx11::basic_string<char>}' and 'void')
                 buffer = app(buffer, cur_buffer, buf_count);
                                                           ^
In file included from /usr/include/c++/7/string:52:0,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iostream:39,
                 from main.cpp:1:
/usr/include/c++/7/bits/basic_string.h:654:7: note: candidate: std::__cxx11::basic_string<_CharT, _Traits, _Alloc>& std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::operator=(const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&) [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]
       operator=(const basic_string& __str)
       ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:654:7: note:   no known conversion for argument 1 from 'void' to 'const std::__cxx11::basic_string<char>&'
/usr/include/c++/7/bits/basic_string.h:693:7: note: candidate: std::__cxx11::basic_string<_CharT, _Traits, _Alloc>& std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::operator=(const _CharT*) [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]
       operator=(const _CharT* __s)
       ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:693:7: note:   no known conversion for argument 1 from 'void' to 'const char*'
/usr/include/c++/7/bits/basic_string.h:704:7: note: candidate: std::__cxx11::basic_string<_CharT, _Traits, _Alloc>& std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::operator=(_CharT) [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]
       operator=(_CharT __c)
       ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:704:7: note:   no known conversion for argument 1 from 'void' to 'char'
/usr/include/c++/7/bits/basic_string.h:722:7: note: candidate: std::__cxx11::basic_string<_CharT, _Traits, _Alloc>& std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::operator=(std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&&) [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]
       operator=(basic_string&& __str)
       ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:722:7: note:   no known conversion for argument 1 from 'void' to 'std::__cxx11::basic_string<char>&&'
/usr/include/c++/7/bits/basic_string.h:785:7: note: candidate: std::__cxx11::basic_string<_CharT, _Traits, _Alloc>& std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::operator=(std::initializer_list<_Tp>) [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]
       operator=(initializer_list<_CharT> __l)
       ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:785:7: note:   no known conversion for argument 1 from 'void' to 'std::initializer_list<char>'
In file included from main.cpp:35:0:
buffered_reader.h:24:55: error: no match for 'operator=' (operand types are 'std::__cxx11::string {aka std::__cxx11::basic_string<char>}' and 'void')
             buffer = app(buffer, cur_buffer, buf_count);
                                                       ^
In file included from /usr/include/c++/7/string:52:0,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iostream:39,
                 from main.cpp:1:
/usr/include/c++/7/bits/basic_string.h:654:7: note: candidate: std::__cxx11::basic_string<_CharT, _Traits, _Alloc>& std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::operator=(const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&) [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]
       operator=(const basic_string& __str)
       ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:654:7: note:   no known conversion for argument 1 from 'void' to 'const std::__cxx11::basic_string<char>&'
/usr/include/c++/7/bits/basic_string.h:693:7: note: candidate: std::__cxx11::basic_string<_CharT, _Traits, _Alloc>& std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::operator=(const _CharT*) [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]
       operator=(const _CharT* __s)
       ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:693:7: note:   no known conversion for argument 1 from 'void' to 'const char*'
/usr/include/c++/7/bits/basic_string.h:704:7: note: candidate: std::__cxx11::basic_string<_CharT, _Traits, _Alloc>& std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::operator=(_CharT) [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]
       operator=(_CharT __c)
       ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:704:7: note:   no known conversion for argument 1 from 'void' to 'char'
/usr/include/c++/7/bits/basic_string.h:722:7: note: candidate: std::__cxx11::basic_string<_CharT, _Traits, _Alloc>& std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::operator=(std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&&) [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]
       operator=(basic_string&& __str)
       ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:722:7: note:   no known conversion for argument 1 from 'void' to 'std::__cxx11::basic_string<char>&&'
/usr/include/c++/7/bits/basic_string.h:785:7: note: candidate: std::__cxx11::basic_string<_CharT, _Traits, _Alloc>& std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::operator=(std::initializer_list<_Tp>) [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]
       operator=(initializer_list<_CharT> __l)
       ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:785:7: note:   no known conversion for argument 1 from 'void' to 'std::initializer_list<char>'

[печатать | | ]

≡

#pragma once
#include <string>
#include <algorithm>
#include <cstring>

class BufferedReader {
 public:
    explicit BufferedReader(PackageStream* stream) : cur_stream(stream) {}
    int32_t Read(char* output_buffer, int32_t buffer_len) {
        char* cur_buffer = new char[cur_stream->PackageLen()];
        int32_t cur_size = 0, buf_count = 0, cur_len = buffer_len;
        if (read_flag) {
            while (buffer_len > cur_stream->PackageLen()) {
                buf_count = cur_stream->ReadPackage(cur_buffer);
                cur_size += buf_count;
                buffer = app(buffer, cur_buffer, buf_count);
                buffer_len -= cur_stream->PackageLen();
            }
            buf_count = cur_stream->ReadPackage(cur_buffer);
            if (buf_count == 0) {
                read_flag = false;
            }
            cur_size += buf_count;
            buffer = app(buffer, cur_buffer, buf_count);
        }
        if (cur_len < cur_size || cur_len < static_cast<int32_t>
            (buffer.size())) {
            cpy(output_buffer, buffer.c_str(), cur_len);
            buffer.erase(0, cur_len);
            delete[] cur_buffer;
            return cur_len;
        } else {
            cur_size = buffer.size();
            cpy(output_buffer, buffer.c_str(), buffer.size());
            buffer.clear();
            delete[] cur_buffer;
            return cur_size;
        }
    }

private:
     PackageStream* cur_stream;
     std::string buffer = "";
     bool read_flag = true;
     void cpy(char* old_buf, const char* new_buf, int32_t size) {
         for (int32_t i = 0; i < size; ++i) {
             old_buf[i] = new_buf[i];
         }
     }
     void app(std::string buf, char* input_str, int32_t size) const {
         for (int32_t i = 0; i < size; ++i) {
             buf.push_back(input_str[i]);
         }
     }
};

(1 914 b)

0.306s 0.013s 10