What is the scope of the variable 'x' in the given program?

In programming, the scope of a variable refers to the context within which that variable can be accessed and utilized. When considering the variable 'x' in the context of scope types, the correct understanding is essential for effective coding.

Function-prototype scope typically applies to variables that are declared within a function prototype or function declaration. This means that the variable is accessible only within the context of that function and is not available elsewhere in the program. In this case, if 'x' has been defined as part of a function prototype, it can only be referenced within the parameters of that function and does not exist outside of it.

Being aware of the specific context of 'x' in the program, if it is indeed declared within a function prototype, the function-prototype scope is the appropriate answer. This is useful in managing variable visibility and avoiding conflicts with other variables defined in different parts of the program.

In contrast, other scope types like global scope would allow a variable to be accessed from anywhere in the program, while block scope restricts access to within a branch of code such as within loops or conditionals. Understanding the distinction between these scopes is crucial for writing clear and maintainable code, especially in larger programs where variable name conflicts can easily arise.