Linux C build UUID

#include <stdio.h> #include <stdlib.h> #include <string.h>/** * Create Random UUID * * @param buf-buffer    To is filled with the UUID string */char *random_uuid (char buf[37]) {const char *c = "89ab";    char *p = BUF;    int n;        for (n = 0; n < ++n) {int b = rand ()%255;            Switch (n) {case 6:sprintf (p, "4%x", b%15);            Case 8:sprintf (P, "%c%x", C[rand ()%strlen (c)], b%15);            Break            default:sprintf (P, "%02x", b);        Break        } p + = 2; Switch (n) {case 3:case 5:case 7:case 9: *p++ = '-'                ;        Break    }} *p = 0; return BUF;} void Main () {char guid[37];random_uuid (GUID);p rintf ("GUID =%s\n", GUID), Random_uuid (GUID);p rintf ("GUID =%s\n", GUID); Random_uuid (GUID);p rintf ("GUID =%s\n", GUID), Random_uuid (GUID);p rintf ("GUID =%s\n",GUID);} 

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Linux C build UUID