获取系统参数

#include <stdio.h>
#include <Windows.h>
#include<time.h>
#include <tchar.h>


#define DIV 1024
#define WIDTH 7


#pragma warning(disable: 4996)   


#define true 1
typedef unsigned char U_CHAR;


//获取系统时间
int getSystemTime(char* buffer){


char buf[128];
time_t rawtime;
struct tm * timeinfo;
time(&rawtime);
timeinfo = localtime(&rawtime);
strftime(buf, sizeof(buf), "Now is %Y-%m-%d %H:%M:%S", timeinfo);
strcpy(buffer,buf);
}


//CPU利用率
FILETIME m_preidleTime;
FILETIME m_prekernelTime;
FILETIME m_preuserTime;


__int64 CompareFileTime2(FILETIME time1, FILETIME time2)
{
__int64 a = time1.dwHighDateTime << 32 | time1.dwLowDateTime;
__int64 b = time2.dwHighDateTime << 32 | time2.dwLowDateTime;




return   b - a;
}


void GetCpuUseage()
{
GetSystemTimes(&m_preidleTime, &m_prekernelTime, &m_preuserTime);
Sleep(1000);
}


double CpuUseage()
{
FILETIME idleTime;
FILETIME kernelTime;
FILETIME userTime;
GetSystemTimes(&idleTime, &kernelTime, &userTime);




int idle = CompareFileTime2(m_preidleTime, idleTime);
int kernel = CompareFileTime2(m_prekernelTime, kernelTime);
int user = CompareFileTime2(m_preuserTime, userTime);




if (kernel + user == 0)
return 0.0;
//（总的时间-空闲时间）/总的时间=占用cpu的时间就是使用率
double cpu = abs((kernel + user - idle) * 100 / (kernel + user));


m_preidleTime = idleTime;
m_prekernelTime = kernelTime;
m_preuserTime = userTime;
return cpu;
}


//读取操作系统的名称
void GetSystemName(char* osname)
{
char buf[128];
SYSTEM_INFO info;        //用SYSTEM_INFO结构判断64位AMD处理器 
GetSystemInfo(&info);    //调用GetSystemInfo函数填充结构 
OSVERSIONINFOEX os;
os.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX);


strcpy(buf, "unknown OperatingSystem.");


if (GetVersionEx((OSVERSIONINFO *)&os))
{
//下面根据版本信息判断操作系统名称 
switch (os.dwMajorVersion)//判断主版本号
{
case 4:
switch (os.dwMinorVersion)//判断次版本号 
{
case 0:
if (os.dwPlatformId == VER_PLATFORM_WIN32_NT)
strcpy(buf, "Microsoft Windows NT 4.0"); //1996年7月发布 
else if (os.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS)
strcpy(buf, "Microsoft Windows 95");
break;
case 10:
strcpy(buf, "Microsoft Windows 98"); 
break;
case 90:
strcpy(buf, "Microsoft Windows Me"); 
break;
}
break;


case 5:
switch (os.dwMinorVersion)//再比较dwMinorVersion的值
{
case 0:
strcpy(buf, "Microsoft Windows 2000"); //1999年12月发布
break;


case 1:
strcpy(buf, "Microsoft Windows XP"); //2001年8月发布
break;


case 2:
if (os.wProductType == VER_NT_WORKSTATION
&& info.wProcessorArchitecture == PROCESSOR_ARCHITECTURE_AMD64)
{
strcpy(buf, "Microsoft Windows XP Professional x64 Edition"); 
}
else if (GetSystemMetrics(SM_SERVERR2) == 0)
strcpy(buf, "Microsoft Windows Server 2003"); //2003年3月发布 
else if (GetSystemMetrics(SM_SERVERR2) != 0)
strcpy(buf, "Microsoft Windows Server 2003 R2"); 
break;
}
break;


case 6:
switch (os.dwMinorVersion)
{
case 0:
if (os.wProductType == VER_NT_WORKSTATION)
strcpy(buf, "Microsoft Windows Vista"); 
else
strcpy(buf, "Microsoft Windows Server 2008"); //服务器版本 
break;
case 1:
if (os.wProductType == VER_NT_WORKSTATION)
strcpy(buf, "Microsoft Windows 7"); 
else
strcpy(buf, "Microsoft Windows Server 2008 R2"); 
break;
}
break;
}
}//if(GetVersionEx((OSVERSIONINFO *)&os))


strcpy(osname, buf);
}


int main(){


//获取系统时间
char buffer[128];
getSystemTime(buffer);
puts(buffer);


//系统运行时间
/*
clock_t start, finish;
double duration;


start = clock();
while (true)
{
finish = clock();
duration = (double)(finish - start) / CLOCKS_PER_SEC;
Sleep(1000);
printf("%.0f 秒\n", duration);


}
*/


//系统版本名称
char osname[20];
GetSystemName(osname);
printf("%s\n", osname);

//CPU利用率
/*
while (true)
{
U_CHAR  sysStateCpu[5];
double cpu = CpuUseage();
sprintf((char*)sysStateCpu, "%.2lf", cpu);
printf("CPU使用率：%s%%\n", sysStateCpu);
Sleep(1000);
}
*/


//内存使用率
char a[128];
MEMORYSTATUSEX statex;
statex.dwLength = sizeof(statex);
GlobalMemoryStatusEx(&statex);
_tprintf(TEXT("There is  %*ld%% percent of memory in use.\n"),
WIDTH, statex.dwMemoryLoad);
statex.dwMemoryLoad;
//硬盘使用率


//CPU风扇转速


printf("hello world!\n");
system("pause");


}