Linux C++获取系统名称和ip

使用封装的这个函数获取系统的名称和ip。

#include <iostream> /* cout */#include <unistd.h>/* gethostname */#include <netdb.h> /* struct hostent */#include <arpa/inet.h> /* inet_ntop */bool GetHostInfo(std::string& hostName, std::string& Ip) {char name[256];gethostname(name, sizeof(name));hostName = name;struct hostent* host = gethostbyname(name);char ipStr[32];const char* ret = inet_ntop(host->h_addrtype, host->h_addr_list[0], ipStr, sizeof(ipStr));if (NULL==ret) {std::cout << "hostname transform to ip failed";return false;}Ip = ipStr;return true;}

进行测试：

//以下测试int main(int argc, char *argv[]) {std::string hostName;std::string Ip;bool ret = GetHostInfo(hostName, Ip);if (true == ret) {std::cout << "hostname: " << hostName << std::endl;std::cout << "Ip: " << Ip << std::endl;}return 0;}

输出结果：略