Compilare: user.c: In function ‘main’: user.c:40:2: warning: statement with no effect [-Wunused-value] for (n; n > 0; n--) ^ user.c:30:8: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%ld%d", &n, &c); ^ user.c:34:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%ld", &nr); ^ user.c:42:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%ld", &nr); ^