A. TRUE.B. TRUE. NOTE THAT EXPRESSIONS A AND B MEAN EXACTLY THE SAM...
1. a. true.b. true. Note that expressions a and b mean exactly the same thing. Because the operators ==and < have higher precedence than &&, you do not need to include the parentheses. The parentheses do, however, make it easier to read. Most people find the expression in a easier to read than the expression in b, even though they mean the same thing.c. true.d. true.e. false. Since the value of the first subexpression, (count == 1), is false, you know that the entire expression is false without bothering to evaluate the second subexpression. Thus, it does not matter what the values of x and y are. This is short-circuit evaluation.f. true. Since the value of the first subexpression, (count < 10), is true, you know that the entire expression is true without bothering to evaluate the second subexpression. Thus, it does not matter what the values of x and y are. This is short-circuit evaluation.g. false. Notice that the expression in g includes the expression in f as a subexpression. This subexpression is evaluated using short-circuit evaluation as we described for f. The entire expression in g is equivalent to !( (true || (x < y)) && true )which in turn is equivalent to !( true && true ), and that is equivalent to !(true), which is equivalent to the final value of false.h. This expression produces an error when it is evaluated because the first subexpression, ((limit/count) > 7), involves a division by zero.i. true. Since the value of the first subexpression, (limit < 20), is true, you know that the entire expression is true without bothering to evaluate the second subexpression. Thus, the second subexpression,((limit/count) > 7)is never evaluated, and so the fact that it involves a division by zero is never noticed by the computer. This is short-circuit evaluation.j. This expression produces an error when it is evaluated because the first subexpression,