Compilare: user.c: In function ‘main’: user.c:134:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d %d", &N, &M); ^ user.c:136:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%s", s[i] + 1); ^ user.c:157:10: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("barbar.out", "w", stdout); ^ user.c: In function ‘fire’: user.c:126:10: warning: ‘dist’ may be used uninitialized in this function [-Wmaybe-uninitialized] fprintf(stdout, "%d\n", (i == NIL) ? NIL : dist - 1); ^