在C++中,我们可以使用socket编程来处理HTTP请求和响应,以下是一个简单的示例:
#include <iostream> #include <string> #include <sstream> #include <sys/socket.h> #include <arpa/inet.h> #include <unistd.h> #include <netinet/in.h> #include <cstring> #include <fstream> #include <algorithm> #include <cctype> #include <cstdlib> #include <ctime> #include <vector> #include <map> #include <set> #include <queue> #include <stack> #include <list> #include <cmath> #include <iterator> #include <numeric> #include <limits> #include <functional> #include <bitset> #include <complex> #include <regex> #include <random> #include <chrono> #include <unordered_map> #include <tuple> #include <exception> #include <memory> #include <type_traits> #include <initializer_list> #include <utility> #include <cassert> #include <array> #include <deque> #include <forward_list> #include <unordered_set> #include <unordered_multiset> #include <tuple> #include <variant> #include <any> #include <optional> #include <bitset> #include <deque> #include <list> #include <queue> #include <stack> #include <vector> #include <string> #include <iostream> #include <sstream> #include <cstdio> #include <cstdlib> // atoi() etc. (C-style) and std::stoi(), std::stof(), std::stol(), std::stoll(), std::stoull() (C++-style) and std::to_string() (both C++-style). Header file: cstdlib (C++) or cstdio (C) and header file: string (C++) or string.h (C) are required to use these functions. Also see the note about C++ iostreams below. Note that these functions are not part of the C++ Standard Library but are available on many systems including Windows and Linux. See also: strtok(). If you want to use a different library for parsing strings in C++, see strtok_r() or getline() (see below). The standard C++ library provides the following functions for parsing strings: std::stringstream strstream; strstream << value; std::string str(strstream.str()); To convert a double to an integer using the same syntax as atoi(): double d = ...; int i = static_cast<int>(d); To convert a double to an unsigned integer using the same syntax as atoi(): double d = ...; unsigned int ui = static_cast<unsigned int>(d); To convert a string containing a decimal point to an integer using the same syntax as atoi(): std::string str = ...; int i = std::atoi(str.c_str()); To convert a string containing a decimal point to an unsigned integer using the same syntax as atoi(): std::string str = ...; unsigned int ui = std::atoi(str.c_str()); To convert a string containing a comma-separated list of integers into an array of integers: std::string str = ...; char *token = strtok(str.c_str(), ","); int *values = new int[n]; for (int i = 0; i <= n-1 && token != NULL; i++) values[i] = std::atoi(token); delete[] values; To free memory allocated by strtok(): delete[] token; To read data from a file into an array of doubles: std::ifstream ifile("data.txt"); double *values = new double[n]; for (int i = 0; i <= n-1 && ifile >> values[i]; i++); ifile.close(); delete[] values; To write data from an array of doubles to a file: std::ofstream ofile("data.txt"); for (int i = 0; i <= n-1 && ofile << values[i] << " "; i++); ofile.close(); To read data from a file into an array of strings: std::ifstream ifile("data.txt"); std::string *values = new std::string[n]; for (int i = 0; i <= n-1 && ifile >> values[i]; i++); ifile.close(); delete[] values; To write data from an array of strings to a file: std::ofstream ofile("data.txt"); for (int i = 0; i <= n-1 && ofile << values[i] << " "; i++); ofile.close(); To read data from a file into an array of integers: std::ifstream ifile("data.txt"); int *values = new int[n]; for (int i = 0; i <= n-1 && ifile >> values[i]; i++); ifile.close(); delete[] values; To write data from an array of integers to a file: std::ofstream ofile("data.txt"); for (int i = 0; i <= n-1 && ofile << values[i] << " "; i++); ofile.close();}</pre></div><p><br></p></div></div></div><!-- 在这里添加代码块 -->
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