Compilare: user.c: In function ‘main’: user.c:62: warning: format ‘%u’ expects type ‘unsigned int’, but argument 3 has type ‘long long int’ user.c:62: warning: format ‘%u’ expects type ‘unsigned int’, but argument 4 has type ‘long long int’ user.c:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result user.c:19: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result user.c:25: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result user.c:27: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result