Compilare: user.c: In function ‘main’: user.c:68: warning: use of ‘ll’ length modifier with ‘f’ type character user.c:71: warning: use of ‘ll’ length modifier with ‘f’ type character user.c:12: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result user.c:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result