Compilare: user.cpp: In function ‘int main()’: user.cpp:122:17: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(ind[x][y].empty()) ^ user.cpp:122:20: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(ind[x][y].empty()) ^ user.cpp:123:21: warning: array subscript has type ‘char’ [-Wchar-subscripts] pairId[x][y] = ++pairs; ^ user.cpp:123:24: warning: array subscript has type ‘char’ [-Wchar-subscripts] pairId[x][y] = ++pairs; ^ user.cpp:124:14: warning: array subscript has type ‘char’ [-Wchar-subscripts] ind[x][y].push_back(i); ^ user.cpp:124:17: warning: array subscript has type ‘char’ [-Wchar-subscripts] ind[x][y].push_back(i); ^ user.cpp:133:16: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(ap[x] == 0) ^ user.cpp:134:21: warning: array subscript has type ‘char’ [-Wchar-subscripts] charId[x] = ++letters + pairs; ^ user.cpp:135:13: warning: array subscript has type ‘char’ [-Wchar-subscripts] ap[x]++; ^ user.cpp:182:22: warning: array subscript has type ‘char’ [-Wchar-subscripts] out << from[x].back() << " "; ^ user.cpp:183:15: warning: array subscript has type ‘char’ [-Wchar-subscripts] from[x].pop_back(); ^