View Compilation Error

0_0_7825911_30470.cpp: In function `std::string Maxsum(std::string, std::string)':
0_0_7825911_30470.cpp:38: error: name lookup of `i' changed for new ISO `for' scoping
0_0_7825911_30470.cpp:30: error:   using obsolete binding at `i'
0_0_7825911_30470.cpp:49: error: invalid initialization of non-const reference of type 'std::string&' from a temporary of type 'std::basic_string<char, std::char_traits<char>, std::allocator<char> >'
0_0_7825911_30470.cpp:5: error: in passing argument 1 of `std::string Reverse(std::string&)'