Compilare: user.cpp: In function ‘int baseBToTen(std::string, int)’: user.cpp:49:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<val.size();i++) ^ user.cpp:50:42: warning: array subscript has type ‘char’ [-Wchar-subscripts] res = res * base + BaseRev[val[i]]; ^ user.cpp: In function ‘void updatePrep(int, int)’: user.cpp:60:28: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(BaseRev[Numar[i]]) ^ user.cpp:65:46: warning: array subscript has type ‘char’ [-Wchar-subscripts] nr = nr*base+BaseRev[Numar[j]]; ^ user.cpp: In function ‘int nrZeros(std::string)’: user.cpp:98:33: warning: array subscript has type ‘char’ [-Wchar-subscripts] for(nr0 = 0;!BaseRev[nr[nr0]];++nr0); ^