#include <stdio.h>
int main(int argc, char **argv) {
  int a, b, c;

  b = 2; c = 3; a = b- --c;    fprintf(stderr, "b- --c    = %d\n", a);
  b = 2; c = 3; a = b-- -c;    fprintf(stderr, "b-- -c    = %d\n", a);
  b = 2; c = 3; a = b---c;     fprintf(stderr, "b---c     = %d\n", a);
  b = 2; c = 3; a = b-/**/--c; fprintf(stderr, "b-/**/--c = %d\n", a);
  b = 2; c = 3; a = b--/**/-c; fprintf(stderr, "b--/**/-c = %d\n", a);
  return 0;
}