Several getKey()

Using Arduino Programming Questions
8

and one more thing..How to assign answer so that I can make if (key == answer)?
example,

int answer = 0;
int i, j;
i=random(4);
j=random(5);
lcd.print(i);
lcd.print("+");
lcd.print(j);
answer=i+j;
key = keypad.getKey();
                if (key != NO_KEY)
                {
                  if (key == answer) // how to do here?
                    //print something..