Natural languageis a set of English language constructs designed to resemble the statements in a programming language but that do not actually run on a computer. _________________________

Which of the following statements is true?

a. Strings can be used in a switch statement’s controlling expression and in its case labels. b. Strings can be used in a switch statement’s controlling expression but not in its case labels. c. Strings cannot be used in a switch statement’s controlling expression but can be used in its case labels. d. Strings cannot be used in a switch statement’s controlling expression and cannot be used in its case labels.

Which of the following will not help prevent infinite loops?

a. Include braces around the statements in a do...while statement. b. Ensure that the header of a for or while statement is not followed by a semicolon. c. If the loop is counter-controlled, the body of the loop should increment or decrement the counter as needed. d. If the loop is sentinel-controlled, ensure that the sentinel value is input eventually.