Compilare: user.cpp: In function ‘int main()’: user.cpp:36:13: warning: unused variable ‘combinari’ [-Wunused-variable] int combinari = (factorial[i]%MOD)*ridicare(((factorial[i/2]%MOD)*(factorial[i-i/2]%MOD))%MOD , MOD-2)%MOD; ^ user.cpp: In function ‘long long int ridicare(long long int, long long int)’: user.cpp:21:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:26:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin , "%lld" ,&n); ^