Compilare: user.cpp: In function ‘int main()’: user.cpp:33:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i < nr; i++) ^ user.cpp:34:39: warning: array subscript has type ‘char’ [-Wchar-subscripts] a += w[i + 1] * v[T[i]]; ^ user.cpp:39:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i < nr; i++) ^ user.cpp:40:35: warning: array subscript has type ‘char’ [-Wchar-subscripts] a += w[i + 1] * v[S[i]]; ^ user.cpp:43:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = nr; i < S.size(); i++) ^ user.cpp:46:32: warning: array subscript has type ‘char’ [-Wchar-subscripts] a += w[nr] * v[S[i]]; ^ user.cpp: In function ‘bool Search(unsigned int)’: user.cpp:57:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i < Hash[line].size(); i++) ^