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Chapter 2: Problem 13

Is the variable name Sales the same as sales? Why or why not?

Short Answer

Expert verified
Explain the significance of case sensitivity in programming languages. Answer: In a case-sensitive programming language, the variable names "Sales" and "sales" are treated as separate identifiers because of the difference in the case of the first letter. Case sensitivity determines how a programming language treats uppercase and lowercase letters, and thus distinguishes between variables with the same sequence of characters but different letter cases.

Step by step solution

01

Understand variable naming conventions

In programming, variables are used to store values. A variable has a unique name, also known as an identifier, which distinguishes it from other variables. These names follow certain conventions, such as being composed of letters, digits, and underscores, and not beginning with a digit.
02

Concept of case sensitivity

Case sensitivity refers to the distinct treatment of uppercase and lowercase letters by a programming language. In a case-sensitive programming language, the variable names "Sales" and "sales" are treated as separate identifiers because of the difference in the case of the first letter.
03

Determine if "Sales" and "sales" are the same

To determine if the variable names "Sales" and "sales" are the same, we need to consider the programming language being used. If the language is case-sensitive (e.g. Python, JavaScript, C++), then these variable names are different, whereas in a case-insensitive language (e.g. SQL), they are treated as the same.

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