Beginning C++ Through Game Programming, Fourth Edition by Michael Dawson

Author:Michael Dawson [Dawson, Michael]
Language: eng
Format: epub, azw3, mobi, pdf
Publisher: Cengage Learning PTR
Published: 2014-06-25T07:00:00+00:00

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Sometimes programmers prefix a reference name with the letter “r” to remind them that they’re working with a reference. A programmer might include the following lines:

int playerScore = 1000; int& rScore = playerScore;

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One way to understand references is to think of them as nicknames. For example, suppose you’ve got a friend named Eugene, and he (understandably) asks to be called by a nickname—Gibby (not much of an improvement, but it’s what Eugene wants). So when you’re at a party with your friend, you can call him over using either Eugene or Gibby. Your friend is only one person, but you can call him using either his name or a nickname. This is the same as how a variable and a reference to that variable work. You can get to a single value stored in a variable by using its variable name or the name of a reference to that variable. Finally, whatever you do, try not to name your variables Eugene—for their sakes.

Trap

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