Compilare: user.c: In function ‘main’: user.c:29:6: warning: unused variable ‘k’ [-Wunused-variable] int k, i, j, N, T; ^ user.c:31:8: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d\n", &T); ^ user.c:35:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d\n", &N); ^ user.c:38:10: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &x); ^