Compilare: user.c: In function ‘func’: user.c:13:5: warning: array subscript has type ‘char’ [-Wchar-subscripts] l += dir[prev[p][l][c]][0]; ^ user.c:14:5: warning: array subscript has type ‘char’ [-Wchar-subscripts] c += dir[prev[p][l][c]][1]; ^ user.c: In function ‘main’: user.c:61:36: warning: unused variable ‘dr’ [-Wunused-variable] int n, i, j, k, p, x, min, l, c, dr; ^ user.c:61:33: warning: variable ‘c’ set but not used [-Wunused-but-set-variable] int n, i, j, k, p, x, min, l, c, dr; ^ user.c:61:30: warning: variable ‘l’ set but not used [-Wunused-but-set-variable] int n, i, j, k, p, x, min, l, c, dr; ^ user.c:62:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &n); ^ user.c:70:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &d[1][1][1]); ^ user.c:80:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &x); ^