Compilare: main.cpp: In member function 'BigNum BigNum::operator*=(int)': main.cpp:26:5: warning: no return statement in function returning non-void [-Wreturn-type] } ^ main.cpp: In function 'int main()': main.cpp:41:13: warning: iteration 67 invokes undefined behavior [-Waggressive-loop-optimizations] d[i]=d[i-1]+(i-1)*d[i-2]; ~~~~^~~~~~~~~~~~~~~~~~~~ main.cpp:40:18: note: within this loop for(int i=3;i<=70;i++) ~^~~~