C++ Variables: Named Storage Units In C++, variables serve as named boxes in memory that hold values during program execution. Each variable has three key aspects: 1. Data Type: Defines the kind of data a variable can store: numbers (integers, floating-point, etc.), characters, boolean values (true/false), or custom data structures (arrays, objects). Common data types: int : Whole numbers (e.g., -10, 0, 23) float : Decimal numbers (e.g., 3.14, -2.5) double : More precise decimal numbers char : Single characters (e.g., 'a', 'Z', '&') bool : True or false values 2. Name: A user-defined label for the variable, chosen according to naming conventions: Start with a letter or underscore. Contain letters, digits, and underscores. Case-sensitive (e.g., age and Age are different). Not a reserved keyword (e.g., int , for ). Choose meaningful names that reflect the variable's purpose. 3. Value: The actual data stored in the variable, which must match its data...
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