/in/foo.cc: In function 'bool fish(int, int)':
/in/foo.cc:19:17: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
  if (b[0] == '0'&&len>1 
                  
/in/foo.cc:21:15: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   || len == 3 && b[2] >'5'
      ~~~~~~~~~^~~~~~~~~~~~
/in/foo.cc:22:15: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   || len == 3 && b[1] >'5')
      ~~~~~~~~~^~~~~~~~~~~~
/in/foo.cc: In function 'int main()':
/in/foo.cc:29:15: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'int' [-Wformat=]
  scanf("%d", T);
               ^
/in/foo.cc:29:16: warning: 'T' is used uninitialized in this function [-Wuninitialized]
  scanf("%d", T);
                ^