c++如何获取mac地址

在C++中获取Mac地址通常需要使用操作系统提供的API来实现。以下是一种在Windows和Linux操作系统中获取Mac地址的方法：

1. 使用Windows API获取Mac地址：

#include <iostream> #include <WinSock2.h> #include <iphlpapi.h>  #pragma comment(lib, "iphlpapi.lib")  int main() {     PIP_ADAPTER_INFO pAdapterInfo;     ULONG ulOutBufLen = sizeof(IP_ADAPTER_INFO);     pAdapterInfo = (IP_ADAPTER_INFO *)malloc(sizeof(IP_ADAPTER_INFO));     if (pAdapterInfo == NULL) {         std::cout << "Memory allocation failed" << std::endl;         return 1;     }      if (GetAdaptersInfo(pAdapterInfo, &ulOutBufLen) == ERROR_BUFFER_OVERFLOW) {         free(pAdapterInfo);         pAdapterInfo = (IP_ADAPTER_INFO *)malloc(ulOutBufLen);         if (pAdapterInfo == NULL) {             std::cout << "Memory allocation failed" << std::endl;             return 1;         }     }      if (GetAdaptersInfo(pAdapterInfo, &ulOutBufLen) == NO_ERROR) {         std::cout << "MAC Address: " << pAdapterInfo->Address[0] << ":" << pAdapterInfo->Address[1] << ":" << pAdapterInfo->Address[2] << ":" << pAdapterInfo->Address[3] << ":" << pAdapterInfo->Address[4] << ":" << pAdapterInfo->Address[5] << std::endl;     } else {         std::cout << "Failed to get MAC address" << std::endl;     }      free(pAdapterInfo);      return 0; } 

2. 使用Linux系统调用获取Mac地址：

#include <iostream> #include <fstream> #include <string>  std::string exec(const char* cmd) {     std::array<char, 128> buffer;     std::string result;     std::unique_ptr<FILE, decltype(&pclose)> pipe(popen(cmd, "r"), pclose);     if (!pipe) {         throw std::runtime_error("popen() failed!");     }     while (fgets(buffer.data(), buffer.size(), pipe.get()) != nullptr) {         result += buffer.data();     }     return result; }  int main() {     std::string mac_address = exec("ifconfig | grep -o -E '([[:xdigit:]]{1,2}:){5}[[:xdigit:]]{1,2}'");     std::cout << "MAC Address: " << mac_address << std::endl;      return 0; } 

请注意，这些代码片段仅供参考，实际环墋中可能需要根据具体情况进行调整和改进。