Borderou de evaluare (job #540568)

Compilare: user.cpp: In function ‘void shiftare(std::string&)’: user.cpp:25:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp: In function ‘void expresie(std::string)’: user.cpp:48:16: warning: array subscript has type ‘char’ [-Wchar-subscripts] user.cpp:54:23: warning: array subscript has type ‘char’ [-Wchar-subscripts] user.cpp: In function ‘void scrie(std::string)’: user.cpp:59:48: warning: array subscript has type ‘char’ [-Wchar-subscripts]