Compilare: user.cpp: In function ‘int main()’: user.cpp:6:27: warning: unused variable ‘fac’ [-Wunused-variable] long long l1,l2,p,m,c,fac,poz,i,ci; ^ user.cpp:6:35: warning: unused variable ‘i’ [-Wunused-variable] long long l1,l2,p,m,c,fac,poz,i,ci; ^ user.cpp:7:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("fact.in","r",stdin); ^ user.cpp:8:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("fact.out","w",stdout); ^