Example Code Ch 12-2
Given the following recursive factorial method:
public int factorial(int x)
{
if (x 1) return x * factorial (x - 1);
else return 1;
}
-Refer to Example Code Ch 12-2: 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

Example Code Ch 12-2
Given the following recursive factorial method:
public int factorial(int x)
{
if (x > 1) return x * factorial (x - 1);
else return 1;
}
-Refer to Example Code Ch 12-2: 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

When factorial(0) is called, the if statement will evaluate to false, and the else statement will be executed, returning 1 as the result.