CS135-Review

Front

What are global variables in C++?

Back

Global variables are variables that are declared outside of any function and can be accessed from any function within the same file.

Front

What is the impact of using global variables in C++ functions?

Back

They can lead to code that is difficult to understand and maintain due to potential side effects.

Front

What is the scope resolution operator (::) in C++?

Back

The scope resolution operator is used to define or access variables and functions in a specific scope, particularly to access global variables when a local variable of the same name exists.

Front

What happens when a function expects a reference parameter in C++?

Back

Any modification to the reference parameter within the function will affect the original variable passed to the function.

Front

What is the rule regarding default arguments in C++ functions?

Back

Parameters with default values must be the rightmost parameters.

Front

What happens when an array is passed to a function in C++?

Back

The function receives the address of the first element of the array.

Front

What is a reference parameter in C++?

Back

A reference parameter allows a function to modify the argument passed to it, as it refers to the original variable.

Front

What is the difference between passing by value and passing by reference in C++?

Back

Passing by value creates a copy of the variable, while passing by reference allows the function to modify the original variable.

Front

What is the purpose of the 'const' keyword in C++ function parameters?

Back

The 'const' keyword indicates that the parameter cannot be modified within the function.

Front

What is a function prototype in C++?

Back

A function prototype is a declaration of a function that specifies its name, return type, and parameters, allowing the function to be called before its definition.