C + +: Get a Globally unique identification number (GUID or UUID) in your program

Windows: Using the CoCreateGuid function (GUID)

#include <stdio.h>#defineGuid_len 64intMainintargcChar*argv[]) {      CharBuffer[guid_len] = {0 };          GUID GUID; if(CoCreateGuid (&GUID)) {fprintf (stderr,"Create GUID error\n"); return-1; } _snprintf (Buffer,sizeof(buffer),"%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x", GUID. Data1, GUID. Data2, GUID. Data3, GUID. data4[0], GUID. data4[1], GUID. data4[2], GUID. data4[3], GUID. data4[4], GUID. data4[5], GUID. data4[6], GUID. data4[7]); printf ("GUID:%s\n", buffer); return 0; }

Linux: Using the Uuid_generate function (UUID)

Compile command: gcc atemp.c-o atemp-luuid

#include <uuid/uuid.h>    int  main ()  {      uuid_t uu;       int i;      Uuid_generate (UU);          for (i=0;i<; i++)      {          printf ("%02x-", Uu[i]);      }      printf ("\ n")      ; return 0 ;  }

C + +: Get a Globally unique identification number (GUID or UUID) in your program