转换字符串成ＩＮＴ６４

可能这个问题好多人碰到过．

u_int64_t PktRx=0,PktTx=0;

    if(strstr(msg,"rcv")!=0)

        {

          if(sscanf(msg, "/tPacket rcv    : %lld/n", &PktRx) == -1)

               {

                 continue;

         }

        //  printf("PktRx:%lld/n",PktRx);

        }

+++++++++++++++++++++++++++++++++++++++++

u_int32_t immSysUpTime()

{

    FILE *fp;

    u_int64_t uptime;

    if ((fp = fopen ("/proc/uptime", "r")) != NULL) {

        if (!fscanf(fp, "%lld", &uptime)) {

     uptime = 0;

        }

        fclose(fp);

    }

    return (u_int32_t)(0xffffffffLL & uptime);  // snmp uptime is only 32bit

}