Compilare: user.c: In function ‘main’: user.c:9: warning: format ‘%lld’ expects type ‘long long int *’, but argument 2 has type ‘long long int’ user.c:9: warning: format ‘%lld’ expects type ‘long long int *’, but argument 3 has type ‘long long int’ user.c:7: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result user.c:8: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result user.c:9: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result user.c:17: warning: control reaches end of non-void function user.c:9: warning: ‘n’ is used uninitialized in this function user.c:9: warning: ‘p’ is used uninitialized in this function