#include
     
          #include
      
           int main()    {    int cpu_num;    cpu_num = sysconf(_SC_NPROCESSORS_CONF);    printf("_SC_NPROCESSORS_CONF=%d\n",cpu_num);    cpu_num = sysconf(_SC_NPROCESSORS_ONLN);    printf("_SC_NPROCESSORS_ONLN=%d\n",cpu_num);    return 0;    }    /*    * - _SC_NPROCESSORS_CONF    * The number of processors configured.    *    * - _SC_NPROCESSORS_ONLN    * The number of processors currently online (available).    */