Compilare: user.cpp: In function ‘int main()’: user.cpp:46:23: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (first[i][c]) ^ user.cpp:47:42: warning: array subscript has type ‘char’ [-Wchar-subscripts] pos[i][++top[i]] = first[i][c], rez++; ^ user.cpp:81:57: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (top[j] == cnt && M[j][pos[j][cnt]][c] != -1) ^ user.cpp:83:61: warning: array subscript has type ‘char’ [-Wchar-subscripts] pos[j][top[j] + 1] = M[j][pos[j][cnt]][c]; ^