C++如何获取系统信息 C++获取IP地址、硬件信息等

#include<stdio.h>
#include<winsock2.h> //该头文件需在windows.h之前
#include<windows.h>
#include<string>
#include<iostream>
#pragma comment(lib,"ws2_32.lib") 
using namespace std;
void getIP()
{
 WSADATA WSAData;  //WSADATA结构被用来储存调用AfxSocketInit全局函数返回的Windows Sockets初始化信息。
 if (WSAStartup(MAKEWORD(2, 0),&WSAData)) // 初始化Windows sockets API
 { 
 printf("WSAStartup failed %s\n", WSAGetLastError());
 exit(-1); //异常退出 
 } 
 char hostName[256];
 if(gethostname(hostName,sizeof(hostName))) //获取主机名
 {
 printf("Error: %u\n", WSAGetLastError());
 exit(-1); //异常退出 
 }
 printf("主机名：    %s\n", hostName);
 hostent *host=gethostbyname(hostName); // 根据主机名获取主机信息. 
 if(host==NULL)
 {
 printf("Error: %u\n", WSAGetLastError());
 exit(-1);
 }
 cout<<"主机地址类型:  "<<host->h_addrtype<<endl
 <<"地址清单:   "<<host->h_addr_list<<endl
 <<"别名列表:   "<<host->h_aliases<<endl
 <<"地址长度:   "<<host->h_length<<endl
 <<"正式的主机名:  "<<host->h_name<<endl;
 for(int i=0;host->h_addr_list[i]!=0;i++)
 {
 cout<<"该主机IP"<<i+1<<":   "<<inet_ntoa(*(struct in_addr*)*host->h_addr_list)<<endl;
 }
 cout<<"-----------------------------------------------"<<endl;
 WSACleanup(); 
}
void getSysInfo()
{
 SYSTEM_INFO sysInfo; //该结构体包含了当前计算机的信息：计算机的体系结构、中央处理器的类型、系统中中央处理器的数量、页面的大小以及其他信息。
 OSVERSIONINFOEX osvi;
 GetSystemInfo(&sysInfo);
 osvi.dwOSVersionInfoSize=sizeof(osvi);
 if (GetVersionEx((LPOSVERSIONINFOW)&osvi))
 {
 printf("操作系统版本 :  %u.%u.%u\n", osvi.dwMajorVersion, osvi.dwMinorVersion,osvi.dwBuildNumber);
 printf("Service Pack :  %u.%u\n", osvi.wServicePackMajor, osvi.wServicePackMinor);
 }
 printf("处理器架构 :  %u\n", sysInfo.wProcessorArchitecture);
 printf("处理器级别 :  %u\n", sysInfo.wProcessorLevel);
 printf("处理器版本 :  %u\n", sysInfo.wProcessorRevision);
 printf("处理器掩码 :  %u\n", sysInfo.dwActiveProcessorMask);
 printf("处理器数量 :  %u\n", sysInfo.dwNumberOfProcessors);
 printf("处理器类型 :  %u\n", sysInfo.dwProcessorType);
 printf("页面大小 :   %u\n", sysInfo.dwPageSize);
 printf("应用程序最小地址 : %u\n", sysInfo.lpMinimumApplicationAddress);
 printf("应用程序最大地址 : %u\n", sysInfo.lpMaximumApplicationAddress);
 printf("虚拟内存分配粒度 : %u\n", sysInfo.dwAllocationGranularity);
 printf("OemId :    %u\n", sysInfo.dwOemId);
 printf("wReserved :   %u\n", sysInfo.wReserved);
}
int main()
{
 getIP();
 getSysInfo();
 return 0; 
}