/in/foo.c: In function 'main':
/in/foo.c:8:11: warning: statement with no effect [-Wunused-value]
  int a;  a>=0;
          ~^~~
/in/foo.c:9:3: warning: statement with no effect [-Wunused-value]
  b<=32767;
  ~^~~~~~~
/in/foo.c:8:11: warning: 'a' is used uninitialized in this function [-Wuninitialized]
  int a;  a>=0;
          ~^~~
/in/foo.c:9:3: warning: 'b' is used uninitialized in this function [-Wuninitialized]
  b<=32767;
  ~^~~~~~~