Compilare: user.c: In function ‘bkt’: user.c:33:11: warning: unused variable ‘j’ [-Wunused-variable] int i, j, dir; ^ user.c: In function ‘main’: user.c:94:8: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d%d", &N, &M, &I); ^ user.c:99:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d", &x, &y); ^