#include <stdio.h>

void run(char *code)
{
  unsigned char a[300000];
  unsigned char *ptr = a;
  unsigned char *loops[1000];
  unsigned char **loopstart = loops;
  while(*code != 0)
    {
      switch(*code)
        {
          case '>': ++ptr; break;
          case '<': --ptr; break;
          case '+': ++*ptr; break;
          case '-': --*ptr; break;
          case '.': putchar(*ptr); break;
          case ',': *ptr = getchar(); break;
          case '[': ++loopstart; *loopstart = code; break;
          case ']': if(*ptr){code = *loopstart;} else --loopstart; break;
        }
      ++code;
    }
}