Compilare: user.c: In function ‘main’: user.c:35: warning: format ‘%lld’ expects type ‘long long int *’, but argument 3 has type ‘int *’ user.c:29: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result user.c:35: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result