Compilare: user.cpp: In function ‘int main()’: user.cpp:14:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<s.size();i++) ^ user.cpp:17:32: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (putere-3>=cost[s[i]]) ^ user.cpp:20:30: warning: array subscript has type ‘char’ [-Wchar-subscripts] putere-=cost[s[i]]; ^ user.cpp:22:49: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] else if (putere>=s_fata and i>=s.size()-3) ^ user.cpp:25:30: warning: array subscript has type ‘char’ [-Wchar-subscripts] putere-=cost[s[i]]; ^