Exam 6: Functions

Which line in the following program contains a call to the showDub function? 1 #include <iostream> 2 using namespace std; 3 void showDub(int); 4 int main() 5 { 6 $\quad$ int x = 2; 7 $\quad$ showDub(x); 8 $\quad$ cout << x << endl; 9 $\quad$ return 0; 10 } 11 void showDub(int num) 12 { 13 $\quad$ cout << (num * 2) << endl; 14 }

A local variable and a global variable may not have the same name within a program.

These types of arguments are passed to parameters automatically if no argument is provided in the function call.

It is good programming practice to __________ your functions by writing comments that describe what they do.

When a function is called, flow of control moves to the function's prototype.

A function __________ contains the statements that make up the function.

What will the following code display? #include <iostream> Using namespace std; Void showDub(int); Int main() { $\quad$ int x = 2; $\quad$ showDub(x); $\quad$ cout << x << endl; $\quad$ return 0; } void showDub(int num) { $\quad$ cout << (num * 2) << endl; }

Which of the following causes a function to execute?

A function can have no parameters, one parameter, or many parameters and can return __________ value(s).