What type of variable is defined within a function and cannot be accessed outside its scope?

A local variable is defined within a function and is only accessible within that specific function's scope. This means that once the function execution is completed, the local variable is destroyed and cannot be accessed from outside that function.

Local variables are important for managing data that is only relevant within the confined context of a function. They help keep the code organized and prevent conflicts with variables of the same name that might exist outside the function. By having these variables confined to their function, it promotes better memory management and less chance of unintended interference with other parts of the program.

In contrast, global variables are accessible throughout the entire program, static variables maintain their value even after the scope of the function has ended, and constant variables are defined to hold fixed values that do not change. Each of these types serves different purposes in programming, but when referring to variables that are kept within the confines of a function, local variables are the focus.