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：

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;}

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。