Compilare: user.cpp: In function ‘int main()’: user.cpp:36:13: warning: unused variable ‘combinari’ [-Wunused-variable] int combinari = factorial[i]*ridicare((factorial[i/2]%MOD)*(factorial[i-i/2]%MOD) , MOD)%MOD; ^ user.cpp: In function ‘int ridicare(int, int)’: user.cpp:21:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:26:27: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin , "%d" ,&n); ^