Compilare: user.cpp: In function ‘int main()’: user.cpp:46:24: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (next[node][s[j]] == 0) { ^ user.cpp:50:21: warning: array subscript has type ‘char’ [-Wchar-subscripts] next[node][s[j]] = nnodes; ^ user.cpp:55:27: warning: array subscript has type ‘char’ [-Wchar-subscripts] node = next[node][s[j]]; ^ user.cpp:80:49: warning: array subscript has type ‘char’ [-Wchar-subscripts] while (pmax[i] > 1 && next[pmax[i]][pchar[i]] == 0) ^ user.cpp:82:31: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (next[pmax[i]][pchar[i]] > 0) ^ user.cpp:83:38: warning: array subscript has type ‘char’ [-Wchar-subscripts] pmax[i] = next[pmax[i]][pchar[i]]; ^