Flash cards
Review the key moves
1/4
Core idea
What is the main idea behind C++ Identifiers?
Lesson checks
Practice each idea before moving on
Short Mimo-style checks built from this lesson's code, terms, and sequence.
1Quick choice
Which statement best captures the main point of this lesson?
2Fill blank
Complete the missing token from the example code.
// ___ int minutesPerHour = 60; // OK, but not so easy to understand what m actually is int m = 60;3Order
Put the learning moves in the order that makes the concept easiest to apply.
Identifiers can be short names (like x and y) or more descriptive names (age, sum, totalVolume).
These unique names are called identifiers .
All C++ variables must be identified with unique names .
All C++ variables must be identified with unique names .
These unique names are called identifiers .
Identifiers can be short names (like x and y) or more descriptive names (age, sum, totalVolume).
Note
It is recommended to use descriptive names in order to create understandable and maintainable code:
// Good int minutesPerHour = 60; // OK, but not so easy to understand what m actually is int m = 60;The general rules for naming variables are:
- Names can contain letters, digits and underscores
- Names must begin with a letter or an underscore (_)
- Names are case-sensitive ( myVar and myvar are different variables)
- Names cannot contain whitespaces or special characters like !, #, %, etc.
- Reserved words (like C++ keywords, such as int ) cannot be used as names