// vcis64.cpp : VC 64位程序开发心的——c语言获得程序位数和操作系统位数和名称。

#include

#include

#include

#include

// 获取程序位数(被编译为多少位的代码)

int GetProgramBits()

{

return sizeof(int*) * 8;

}

// 安全的取得真实系统信息

VOID SafeGetNativeSystemInfo(__out LPSYSTEM_INFO lpSystemInfo)

{

if (NULL==lpSystemInfo)return;

typedef VOID (WINAPI *LPFN_GetNativeSystemInfo)(LPSYSTEM_INFO lpSystemInfo);

LPFN_GetNativeSystemInfo fnGetNativeSystemInfo = (LPFN_GetNativeSystemInfo)GetProcAddress( GetModuleHandle(_T("kernel32")), "GetNativeSystemInfo");;

if (NULL != fnGetNativeSystemInfo)

{

fnGetNativeSystemInfo(lpSystemInfo);

}

else

{

GetSystemInfo(lpSystemInfo);

}

}

// 获取操作系统位数

int GetSystemBits()

{

SYSTEM_INFO si;

SafeGetNativeSystemInfo(&si);

if (si.wProcessorArchitecture == PROCESSOR_ARCHITECTURE_AMD64 ||

si.wProcessorArchitecture == PROCESSOR_ARCHITECTURE_IA64 )

{

return 64;

}

return 32;

}

//获取操作系统名字，如windows 7

//成功返回系统信息，失败返回NULL

int GetVersionInfo(char* systeminfo)

{

OSVERSIONINFO osvi;

ZeroMemory(&osvi, sizeof(OSVERSIONINFO));

osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);

if (!GetVersionEx(&osvi)) {

return NULL;

}

//判断版本

if (osvi.dwMajorVersion == 5) {

switch (osvi.dwMinorVersion) {

case 0:

//wcscpy_s(systeminfo,_T("Windows 2000"));

strcpy(systeminfo,"Windows 2000");

break;

case 1:

strcpy(systeminfo,"Windows XP");

break;

case 2:

strcpy(systeminfo,"Windows Server 2003");

break;

default:

strcpy(systeminfo,"Unknown");

break;

}

}else if (osvi.dwMajorVersion == 6) {

switch (osvi.dwMinorVersion) {

case 0:

strcpy(systeminfo,"Windows Vista");

break;

case 1:

strcpy(systeminfo,"Windows 7");

break;

case 2:

strcpy(systeminfo,"Windows 8");

break;

default:

strcpy(systeminfo,"Unknown");

break;

}

}else {

strcpy(systeminfo,"Unknown");

}

return 0;

}

int _tmain(int argc, _TCHAR* argv[])

{

const int nBitCode = GetProgramBits();

const int nBitSys = GetSystemBits();

char systeminfo[1024];

memset(systeminfo,0,1024);

GetVersionInfo(systeminfo);

//_tprintf

printf("I am a %dbit Program, run on %d bit %s System.", nBitCode, nBitSys,systeminfo);

//

_getch();

return 0;

}