<ul data-eligibleForWebStory="true">Variables and data types in C++ are fundamental for storing and manipulating data within programs.In C++, variables act as containers for data values and memory locations.Data types in C++ determine the type of data a variable can store.Variables in C++ are named storage locations that can hold values which can be changed during program execution.Variables follow specific naming rules, such as case sensitivity and starting with a letter or underscore.C++ has local, global, and function scopes for variables, dictating where they can be accessed.Primitive data types in C++ include int, char, float, double, and bool for storing different value types.Derived data types like functions, arrays, pointers, and references build on primitive types for added functionality.Understanding variables and data types is crucial for effective programming and efficient data handling in C++.The article provides detailed examples and explanations of variables, data types, and their usage in C++ programming.