mxl.cpp:10: warning: aggregate has a partly bracketed initializer mxl.cpp: In function `int main()': mxl.cpp:14: warning: char format, different type arg (arg 5) mxl.cpp:17: warning: comparison between signed and unsigned integer expressions mxl.cpp:19: warning: passing NULL used for non-pointer argument 3 of `void std::fill(_ForwardIter, _ForwardIter, const _Tp&) [with _ForwardIter = char*, _Tp = int]' mxl.cpp:23: warning: NULL used in arithmetic mxl.cpp:41: warning: passing NULL used for non-pointer argument 3 of `void std::fill(_ForwardIter, _ForwardIter, const _Tp&) [with _ForwardIter = char*, _Tp = int]' mxl.cpp:12: warning: unused variable `int r'