Eroare de compilare: user.cpp: In function ‘long int f(long int)’: user.cpp:18:7: error: ‘cout’ was not declared in this scope cout<<"upsi"; ^ user.cpp: At global scope: user.cpp:65:11: error: ‘::main’ must return ‘int’ void main() ^ user.cpp: In function ‘int main()’: user.cpp:66:3: error: ‘cout’ was not declared in this scope { cout<<endl; ^ user.cpp:98:7: error: return-statement with no value, in function returning ‘int’ [-fpermissive] return; ^