What is the return value of f(p, p) if the value of p is initialized to 5 before the call?int f(int&x, int c) {c = c - 1;
if (c == 0) return 1;
x = x + 1;
return f(x, c) * x;
}
Note that the first parameter is passed by reference, whereas the second parameter is passed by value.
