获取系统开机的时间（Windows、Linux）-白红宇

获取系统启动的时间。Windows系统和Linux系统

1、Windows系统

　　1）代码如下

#include 
     
      #include 
      
       #include 
       
        #define PRINT_ALL    0xff#define PRINT_DATE    (1 << 0)#define PRINT_TIME    (1 << 1)void printTime(time_t nowtime, int iFlag){    struct tm *timeinfo;    timeinfo = localtime( &nowtime );    int year, month, day, hour, min, sec;    year = timeinfo->tm_year + 1900;    month = timeinfo->tm_mon + 1;    day = timeinfo->tm_mday;    hour = timeinfo->tm_hour;    min = timeinfo->tm_min;    sec = timeinfo->tm_sec;    if(iFlag & PRINT_DATE)    {        printf("%d-%d-%d ", year, month, day);    }    if(iFlag & PRINT_TIME)    {        printf("%02d:%02d:%02d", hour, min, sec);    }    fflush(stdout);}int main(){    int iRunTime = GetTickCount();    time_t nowtime;    time( &nowtime );    printf("Now          : ");    printTime(nowtime, PRINT_ALL);    printf("\n");    time_t DateTime = nowtime - (iRunTime / 1000);    printf("System start : ");    printTime(DateTime, PRINT_ALL);    printf("\n");    int iH, iM, iS, iSec;    iSec = iRunTime / 1000;    iH = iSec / 3600;    iM = iSec / 60 % 60;    iS = iSec % 60;    printf("System run   : %02d:%02d:%02d\n", iH, iM, iS);    return 0;}

　　2）运行结果

2、Linux下

　　1）代码如下

#include 
     
      #include 
      
       #include 
       
        #include 
        
         #include 
         
          static int print_system_boot_time(){    struct sysinfo info;    time_t cur_time = 0;    time_t boot_time = 0;    struct tm *ptm = NULL;    if (sysinfo(&info))     {        fprintf(stderr, "Failed to get sysinfo, errno:%u, reason:%s\n",                errno, strerror(errno));        return -1;    }    time(&cur_time);    if (cur_time > info.uptime)     {        boot_time = cur_time - info.uptime;    }    else    {        boot_time = info.uptime - cur_time;    }    ptm = gmtime(&boot_time);    printf("System boot time: %d-%-d-%d %d:%d:%d\n", ptm->tm_year + 1900,            ptm->tm_mon + 1, ptm->tm_mday, ptm->tm_hour, ptm->tm_min, ptm->tm_sec);    return 0; }int main(){    if (print_system_boot_time() != 0)     {        return -1;    }    return 0;}

　　2）运行结果

$ ./getSysRunTime System boot time: 2015-2-6 1:29:50

本文转自郝峰波博客园博客，原文链接：http://www.cnblogs.com/fengbohello/p/4277082.html，如需转载请自行联系原作者