Compilare: user.cpp: In function ‘int main()’: user.cpp:27:43: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(last[sir[i][strlen(sir[i]) - 1]] < 0){ ^ user.cpp:28:44: warning: array subscript has type ‘char’ [-Wchar-subscripts] last[sir[i][strlen(sir[i]) - 1]] = i; ^ user.cpp:34:26: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(last[sir[i][0]] < i && last[sir[i][0]] > 0){ ^ user.cpp:34:49: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(last[sir[i][0]] < i && last[sir[i][0]] > 0){ ^ user.cpp:35:48: warning: array subscript has type ‘char’ [-Wchar-subscripts] max_len[i] = max_len[last[sir[i][0]]] + 1; ^ user.cpp:36:39: warning: array subscript has type ‘char’ [-Wchar-subscripts] before[i] = last[sir[i][0]]; ^ user.cpp:41:55: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(max_len[last[sir[i][strlen(sir[i]) - 1]]] < max_len[i]){ ^ user.cpp:42:48: warning: array subscript has type ‘char’ [-Wchar-subscripts] last[sir[i][strlen(sir[i]) - 1]] = i; ^ user.cpp:54:26: warning: ‘poz’ may be used uninitialized in this function [-Wmaybe-uninitialized] poz = before[poz]; ^