Chapter 2: Problem 13

Summarize three common rules for naming variables.

Short Answer

Expert verified

Answer: The three common rules for naming variables are: 1. Choose meaningful names that clearly describe the variable's purpose or the data it represents. 2. Use casing and separators, such as camelCase, snake_case, or PascalCase, for enhanced readability. 3. Avoid starting variable names with a number and refrain from using special characters, sticking to alphanumeric characters and underscores instead.

Step by step solution

Rule 1: Choose meaningful names

When naming variables, it's important to choose names that clearly describe the variable's purpose or the data it represents. Avoid using single characters or short, vague names that don't provide any information about what the variable is for.

Rule 2: Use casing and separators for readability

To make variable names more readable, use appropriate casing and separators. There are a few different conventions for this, such as camelCase (e.g., userInfo), snake_case (e.g., user_info), or PascalCase (e.g., UserInfo). Consistently following one of these conventions will make your code easier to read.

Rule 3: Don't start with a number or use special characters

Variable names should begin with a letter or an underscore, not a number. Also, avoid using special characters in variable names, such as spaces, dashes, or other symbols. Stick to alphanumeric characters and underscores to ensure that the variables adhere to most programming languages' rules for naming variables.

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Summarize three common rules for naming variables.

Short Answer

Step by step solution

Rule 1: Choose meaningful names

Rule 2: Use casing and separators for readability

Rule 3: Don't start with a number or use special characters

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