Compilare: user.cpp: In function ‘void adv()’: user.cpp:51:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(crChar < s.size() && isDigit[s[crChar]] == 0) ~~~~~~~^~~~~~~~~~ user.cpp:51:49: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(crChar < s.size() && isDigit[s[crChar]] == 0) ^ user.cpp: In function ‘int getNr()’: user.cpp:60:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(crChar < s.size() && isDigit[s[crChar]] == 1) ~~~~~~~^~~~~~~~~~ user.cpp:60:49: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(crChar < s.size() && isDigit[s[crChar]] == 1) ^