/in/foo.cc: In function 'int main()':
/in/foo.cc:10:4: warning: comparisons like 'X<=Y<=Z' do not have their mathematical meaning [-Wparentheses]
  0 < b < a < 1000000000000000000;
  ~~^~~
/in/foo.cc:10:12: warning: comparison of constant '1000000000000000000l' with boolean expression is always true [-Wbool-compare]
  0 < b < a < 1000000000000000000;
  ~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~
/in/foo.cc:10:8: warning: comparisons like 'X<=Y<=Z' do not have their mathematical meaning [-Wparentheses]
  0 < b < a < 1000000000000000000;
  ~~~~~~^~~
/in/foo.cc:10:12: warning: statement has no effect [-Wunused-value]
  0 < b < a < 1000000000000000000;
  ~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~
/in/foo.cc:9:6: warning: unused variable 'e' [-Wunused-variable]
  int e = 1;
      ^