For the questions below, refer to the following recursive factorial method.
public int factorial(int x)
{
if (x 1) return x * factorial (x - 1);
else return 1;
}
-What is returned if factorial(0) is called?
A) 0
B) 1
C) 2
D) nothing, factorial(0) causes infinite recursion
E) nothing, factorial(0) produces a run-time error

Question

For the questions below, refer to the following recursive factorial method.
public int factorial(int x)
{
if (x > 1) return x * factorial (x - 1);
else return 1;
}
-What is returned if factorial(0) is called?
A) 0
B) 1
C) 2
D) nothing, factorial(0) causes infinite recursion
E) nothing, factorial(0) produces a run-time error

Quizplus · Accepted Answer

B) With factorial(0), (x > 1) is not True, so the base case is executed and 1 is returned. Therefore, even though ordinarily 0 * value = 0, the factorial(0) is computed as 1.

For the Questions Below, Refer to the Following Recursive Factorial