/in/foo.c: In function 'main':
/in/foo.c:18:5: warning: statement with no effect [-Wunused-value]
    y==x*x*x;
    ~^~~~~~~
/in/foo.c:19:2: warning: 'y' may be used uninitialized in this function [-Wmaybe-uninitialized]
  printf("%.3f",y);
  ^~~~~~~~~~~~~~~~

VJ4Error('ProblemDataNotFoundError', '题目 1004 的数据未找到。', 'MJ_C', 1004)