What happens when this is used in a constructor’s body to call another constructor of the same class if that call is not the first statement in the constructor?
a. A compilation error occurs.
b. A runtime error occurs.
c. A logic error occurs.
d. Nothing happens. The program compiles and runs.
a. A compilation error occurs.
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In the following statement, which is the superclass?
public class ClassA extends ClassB implements ClassC a. ClassA b. ClassB c. ClassC d. cannot tell
Which of the following statements is false?
a. Each function should perform a single, well-defined task. b. The following code calls function square twice. We’ve replaced each of the output values with ???. The first call produces the int value 49 and the second call produces the int value 6: In [1]: def square(number): ...: """Calculate the square of number.""" ...: return number ** 2 ...: In [2]: square(7) Out[2]: ??? In [3]: square(2.5) Out[3]: ??? c. The statements defining a function are written only once, but may be called “to do their job” from many points in a program and as often as you like. d. Calling square with a non-numeric argument like 'hello' causes a TypeError because the exponentiation operator (**) works only with numeric values.
Clicking a button on a program screen causes an event to occur.
Answer the following statement true (T) or false (F)
How many samples should be included within a traditional portfolio?
a. 1–5 b. 15–20 c. 30–40 d. All of your work