Compilare: user.c: In function ‘main’: user.c:52: warning: format ‘%u’ expects type ‘unsigned int *’, but argument 3 has type ‘long unsigned int *’ user.c:57: warning: format ‘%u’ expects type ‘unsigned int’, but argument 3 has type ‘long unsigned int’ user.c:49: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result user.c:52: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result