Exam 6: Functions

This function causes a program to terminate, regardless of which function or control mechanism is executing.

When used as parameters, these types of variables allow a function to access the parameter's original argument:

A _________ variable is declared outside all functions.

A function's return data type must be the same as the function's parameters.

Given the following function: void calc (int a, int& b) { $\quad$ Int c; $\quad$ c = a + 2; $\quad$ a = a * 3; $\quad$ b = c + a; } What is the output of the following code segment that invokes calc(): Int x = 1; Int y = 2; Int z = 3; Calc(x, y); Cout << x << " " << y << " " << z << endl;

If a function does not have a prototype, default arguments may be specified in the __________.

Global variables are initialized to zero by default.

Which line in the following program contains the prototype 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 }

Which line in the following program contains the header for 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 }

You may use the exit() function to terminate a program, regardless of which control mechanism is executing.

What is the data type of the following function prototype's parameter variable? Int myFunction(double);

Select all that apply. Which of the following must be included in a function header?

EXIT_FAILURE and ________ are named constants that may be used to indicate success or failure when the exit() function is called.

A function is executed when it is

__________ functions may have the same name as long as their parameter lists are different.

The value in a __________ variable persists between function calls.

One reason for using functions is to break programs into manageable units or modules.

A static variable that is defined within a function is initalized only once, the first time it is called.

This type of variable is defined inside a function and is not accessible outside the function.

A parameter is a special purpose variable that is declared inside the parentheses of a function definition.