Just a quick question, can we put an address as a function argument like int f(int &x){...} ?????? (Pleaase tell me we can't😭)

Question

If we can than what is the difference between it and f(int *x){...}
Actually our professor put on exam a code like:
int f(int &x, int *y){x+=10 ;...
return x;}
int main(){...int a=3,b=1;
printf("%d %d", f(a,&b),a);
...
return 0;}something like this. then told us write the out put f(a,b)=?. a=? /*BTW I answered there is an error in the code🤓🤓*/

Answer 1

~ swim ~ it's in C.
Thank you so much @~ swim ~

Answer 2

We cannot take address in function as arguments in C. It will obviously throw an error.