COSC 1336 Chapter 6 Functions Quiz

What will the following code display? #include <iostream> using namespace std; void doSomething(int); int main() { int x = 2; cout << x << " "; doSomething(x); cout << x << " "; return 0; } void doSomething(int num) { num = 0; cout << num << " "; }

2 0 2

In the following function prototype, how many parameter variables does this function have? int myFunction(double x, double y, double z);

3

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

4 2

Functions are ideal for menu-driven programs. When the user selects a menu item, the program can __________ the appropriate function.

call

A function is executed when it is:

called

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

definition

What is the data type of the following function prototype's return value? int myFunction(double);

int

Given the following function, what would be an appropriate call to this function? #include "pch.h" #include <string> #include <iostream> using namespace std; int myFunction(int x, int y, string z);

int a = myFunction(1, 2, "3");

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 int x = 2; 7 showDub(x); 8 cout << x << endl; 9 return 0; 10 } 11 void showDub(int num) 12 { 13 cout << (num * 2) << endl; 14 }

line 11

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 int x = 2; 7 showDub(x); 8 cout << x << endl; 9 return 0; 10 } 11 void showDub(int num) 12 { 13 cout << (num * 2) << endl; 14 }

line 3

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

line 7

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

local

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

only one

A function _________ eliminates the need to place a function definition before all calls to the function.

prototype

This statement causes a function to end.

return