Compilare: user.cpp: In function ‘bool verif(int)’: user.cpp:10:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<aux.size(); i++) ~^~~~~~~~~~~ user.cpp:14:32: warning: array subscript has type ‘char’ [-Wchar-subscripts] nrch+=f[pos][aux[i]]; ^ user.cpp:15:29: warning: array subscript has type ‘char’ [-Wchar-subscripts] pos=lit[nrch][aux[i]]; ^ user.cpp: In function ‘int main()’: user.cpp:29:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<s.size(); i++) ~^~~~~~~~~ user.cpp:34:18: warning: array subscript has type ‘char’ [-Wchar-subscripts] f[i][s[i]]++; ^ user.cpp:35:22: warning: array subscript has type ‘char’ [-Wchar-subscripts] lit[f[i][s[i]]][s[i]]=i; ^ user.cpp:35:29: warning: array subscript has type ‘char’ [-Wchar-subscripts] lit[f[i][s[i]]][s[i]]=i; ^