Compilare: user.c: In function ‘cLS’: user.c:6: warning: unused variable ‘aux’ user.c: In function ‘extrag’: user.c:21: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result user.c: In function ‘main’: user.c:27: warning: unused variable ‘i’ user.c:28: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result user.c:36: warning: ignoring return value of ‘system’, declared with attribute warn_unused_result