#include void _exit(int code) { (void)code; for (;;); } int _getpid(int pid) { (void)pid; return 0; } void _kill(int pid) { (void)pid; } void _sbrk(void) { } char *itoa(int n, int base) { static char buf[16]; char *p = buf + 15; *p = '\0'; do *--p = "0123456789ABCDEF"[n % base]; while (n /= base); return p; }