Eroare de compilare: user.cpp: In function ‘std::string INIT(std::string)’: user.cpp:17:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<s.size();i++) ^ user.cpp:21:14: warning: array subscript has type ‘char’ [-Wchar-subscripts] apare[s[i]] = 0; ^ user.cpp: In function ‘std::string transform(std::string)’: user.cpp:36:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<s.size();i++) ^ user.cpp:44:10: warning: array subscript has type ‘char’ [-Wchar-subscripts] ct[lit] += semn*semnnum*numar; ^ user.cpp:50:10: warning: array subscript has type ‘char’ [-Wchar-subscripts] ct[lit] += semn*semnnum*numar; ^ user.cpp:56:10: warning: array subscript has type ‘char’ [-Wchar-subscripts] ct[lit] += semn*semnnum*numar; ^ user.cpp:63:8: warning: array subscript has type ‘char’ [-Wchar-subscripts] ct[lit] += semn*semnnum*numar; ^ user.cpp:65:13: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (ct[lit]!=0) ^ user.cpp:68:14: warning: array subscript has type ‘char’ [-Wchar-subscripts] ltoa(ct[lit],buf,10); ^ user.cpp:68:22: error: ‘ltoa’ was not declared in this scope ltoa(ct[lit],buf,10); ^ user.cpp:69:13: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (ct[lit] >= 0) ^ user.cpp: In function ‘int main()’: user.cpp:98:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<s.size();i++) ^ user.cpp:102:13: warning: array subscript has type ‘char’ [-Wchar-subscripts] apare[lit] = semn*numar; ^ user.cpp:113:11: warning: array subscript has type ‘char’ [-Wchar-subscripts] apare[lit] = semn*numar; ^ user.cpp:115:16: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (apare[lit]>lim) g << lit << ' ' << apare[lit] << endl; ^ user.cpp:115:51: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (apare[lit]>lim) g << lit << ' ' << apare[lit] << endl;