Chapter 7

Answers to Chapter 7 Review Questions

1: How are the following expressions evaluated in C#:

  1. 5 + 10 * 2

  2. 5 * 6 / 3

  3. 12 / 4 * 6

  4. 20 % 8

  5. myIntVariable++

  6. --myIntVariable

A1:

  1. 5 + (10 * 2) = 5 + 20 = 25

  2. (5 * 6) / 3 = 30 / 3 = 10

  3. (12 / 4) * 6 = 3 * 6 = 18

  4. 20 % 8 = 4

  5. The value of myIntVariable is incremented by one. If myIntVariable++ is part of a longer expression, this increment will take place after other operations in the expression.

  6. The value of myIntVariable is decremented by one. If --myIntVariable is part of a longer expression this decrement will take place before other operations in the expression.

2: Suppose you need to add number1 and number2 together and multiply this result by number3. The first attempt:
number1 + number2 * number3

gave a wrong ...

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