In dealing with the law enforcement agency telephone, the person answering the phone should
a. permit the phone to ring twice in order to avoid calls that might be wrong numbers.
b. answer the phone promptly with a polite and courteous tone of voice.
c. put the person calling on "hold" until all the phone lines have been answered.
d. tell the caller that he or she is too busy to handle the call right now.
Answer: b. answer the phone promptly with a polite and courteous tone of voice.
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What is wrong with the following switch statement?
int ans; cout <<"Type y for yes on n for no\n"; cin >> ans; switch (ans) { case 'y': case 'Y': cout << "You said yes\n"; break; case 'n': case 'N': cout << "You said no\n"; break; default: cout <<"invalid answer\n"; } a. ans is a int b. break; is illegal syntax c. nothing d. there are no break statements on 2 cases.
The block of code that checks if an unusual situation or error occurs is called
a. the catch block b. the try block c. a function d. an error block
Which of the following statements are correct?
a. new Scene(new Button("OK")); b. new Scene(new Circle()); c. new Scene(new ImageView()); d. new Scene(new Pane());
There are n people in a room, where n is an integer greater than or equal to 2. Each person shakes hands once with every other person. What is the total number of handshakes in the room? Write a recursive method to solve this problem with the following header:
public static int handshake(int n) where handshake(n) returns the total number of handshakes for n people in the room. To get you started, if there are only one or two people in the room, then: handshake(1) = 0 handshake(2) = 1 This is a short and relatively straightforward recursive problem.