In C++, local variables are typically used for which purpose?

Local variables in C++ are primarily used to temporarily store data within a function. When a function is called, local variables are created in the function's stack frame, and they retain their values as long as the function is executing. Once the function completes, these local variables are destroyed, and their memory is reclaimed. This behavior is essential for managing data that is only relevant during the execution of that specific function.

Local variables allow for encapsulation of data, which means that they help reduce potential name conflicts with variables in other functions or scopes. They are also significant in terms of maintaining clean code, as they promote clear data flow and minimize side effects because their scope is limited to the particular function in which they are declared. This characteristic ensures that data is kept temporary and local, aligning with the intended use of local variables in programming.

In contrast, sharing data across functions typically involves the use of global or static variables. Defining constants is usually done with the const keyword, which can create constants at various scopes, not limited to local variables. Lastly, holding global configurations refers to using global scope variables, which are accessible by all functions but can lead to strong coupling between parts of programs if not managed carefully.