Compilare: user.cpp: In function ‘int main()’: user.cpp:40:37: warning: array subscript has type ‘char’ [-Wchar-subscripts] d[x][y][z]=d[q[st].a][q[st].b][q[st].c]+1; ^ user.cpp:40:46: warning: array subscript has type ‘char’ [-Wchar-subscripts] d[x][y][z]=d[q[st].a][q[st].b][q[st].c]+1; ^ user.cpp:40:55: warning: array subscript has type ‘char’ [-Wchar-subscripts] d[x][y][z]=d[q[st].a][q[st].b][q[st].c]+1; ^ user.cpp:16:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d", &n, &m); ^ user.cpp:18:42: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d%d", &x, &y, &z); ^