Cosc 6-7
What will the following code display? int numbers[4] = { 99, 87 }; cout << numbers[3] << endl;
0
How many elements does the following array have int bugs[1000];
1000
Which line in the following program contains the header for the showDub function 1 #include <iostream> 2 using namespace std; 3 4 void showDub(int); 5 6 int main() 7 { 8 Int x = 2; 9 10 showDub(x); 11 court << x << endl; 12 return 0; 13 } 14 15 void showDub (int num) 16 { 17 cout << (num * 2) << endl; 18 }
15
What will the following C++ 11 code display vector<int> numbers { 3, 5 } for (int val : numbers)
3 5
What is the last legal subscript that can be used with the following array? int values[5];
4
Which line in the following program contains the prototype for this showDub function 1 #include <iostream> 2 using namespace std; 3 4 void showDub(int); 5 6 int main() 7 { 8 Int x = 2; 9 10 sho wDub(x); 11 court << x << endl; 12 return 0; 13 } 14 15 void showDub (int num) 16 { 17 cout << (num * 2) << endl; 18 }
4
What is the output of the following program 1 #include <iostream> 2 using namespace std; 3 4 void showDub(int); 5 6 int main() 7 { 8 Int x = 2; 9 10 showDub(x); 11 court << x << endl; 12 return 0; 13 } 14 15 void showDub (int num) 16 { 17 cout << (num * 2) << endl; 18 }
4 2
What will the following code display? Int numbers[ ] = { 99, 87, 66, 55, 101 } for (int i = 1; i < 4; i++) cout << numbers[ i ] << endl;
87 66 55
Which of the following statements about global variables is true?.
A global variable can have the same name as a variable that is declared locally within a function.
A two-dimensional array of characters can contain A) strings of the same length B) strings of different lengths C) uninitialized elements D) All of these E) None of these
All of these
What will the following code do const int SIZE = 5; double x[SIZE]; for (int i = 2; i <= SIZE; i++) { x[i] = 0.0; }
An error will occur when the code runs
Unlike regular variables, these can hold multiple values.
Arrays
A _____ argument is passed to a parameter when the actual argument is left out of the function call
Default
It is a good programming practice to _______ your functions by writing comments that describe what they do
Document
Enough function header, you must furnish: A) Data type(s) of the parameters B) Data type of the return value C) The name of function D) Names of parameters variables E) All of these
E) All of these
EXIT_FAILURE and ________ are named constants that may be used to indicate success or failure when the exit() function is called.
EXIT_SUCCESS
True/False: Although two-dimensional arrays are a novel idea, there is no known way to pass one to a function.
False
True/False: Assume array1 and array2 are the names of arrays. To assign the contents of array2 to array1, you would use the following statement. array1 = array2;
False
True/False: C++ limits the number of array dimensions to two.
False
True/False: The statement double money[25.00]; Is a valid C++ array definition
False
True/false: A function's return data type must be the same as the function's parameter(s)
False
True/false: An array initialization list must be placed on one single line
False
True/false: In C++ 11, the range-based for a loop is best used in situations where you need the element subscript for some purpose
False
True/false: When a function is called, flow of control moves to the functions prototype
False
True/false: local variables are initialized to zero by default
False
This is a statement that causes a function to execute
Function call
What does the following statement do vector<int> v(10, 2);
It creates a vector object with a starting size of 10 and all elements are initialized with the value 2.
What does the following statement do vector<int> v(10);
It creates a vector object with a starting size of 10.
It is ______ to pass an argument to a function that contains a individual array element, such as numbers [3]
Legal in C++
This type of variable is defined inside of function and is not accessible outside function
Local
If a function is called more than once in a program, the values stored in the functions local variables do not _____ between function calls
Persist
This statement causes a function to end
Return
This is a dummy function that is called instead of the actual function it represents
Stub
A vector object automatically expands inside to accommodate the items stored in it
True
True/false: A static variable that is defined within a function is initialized only once, the first time the function is called
True
True/false: If an array is partially initialized, the uninitialized elements will be set to zero
True
True/false: In C++ 11, you cannot use a range-based for loop to modify the contents of an array unless you declare the range variable as a reference
True
True/false: The amount of memory used by an array depends upon the arrays day at a time and the number of elements in the array
True
True/false: When you pass an array as an argument to a function, the function can modify the contents of the array
True
True/false: it is possible for a function to have some parameters with default arguments and some without
True
_______ functions may have the same name, as long as their parameter lists are different
Two or more
To assign the contents of one array to another, you must use _______
a loop to assign the elements of one array to the other array
When writing functions that accept multi-dimensional arrays as arguments, ______ must be explicitly stated in the parameter list
all but the first dimension
A(n) _______ is information that is passed to a function, and a(n) ______ is information that is received by a function
argument, parameter
An array's size declarator must be a ________ with a value greater than ________.
constant integer expression, zero
These types of arguments are passed to parameters automatically if no argument is provided in the function call
default
The individual values contained in array are known as ______
elements
This vector function returns true if the vector has no elements
empty
An array can easily be stepped through by using a
for loop
This is a collection of statements that performs a specific task
function
If a function does not have a prototype, default arguments may be specified in the function ________
header
An array with no elements is
illegal in C++
The statement: int grades[ ] = { 100, 90, 99, 80}; Shows an example of:
implicit array sizing
Which of the following is a valid C++ array definition
int array[10];
Which of the following is a valid C++ array definition
int scores [10];
The name of an array stores the ______ of the first array element
memory address
To pass an array as a argument to a function, pass the ______ of the array
name
The _____ is automatically appended to a character array when it is initialized with a string constant
null terminator
A two-dimensional array can have elements of ______ data type(s)
one
This vector function removes an item from a vector
pop_back
A function ____ eliminates the need to place a function definition before all calls to the function
prototype
This vector function is used to insert an item into a vector
push_back
The range-based for loop, in C++ 11, is designed to work with a built-in variable known as the _______
range variable
A two-dimensional array can be viewed as _____ and ________
rows, columns
Given the following declaration, where is the value 77 stored in the scores array
scores[2]
A two-dimensional array is like _______ put together
several identical arrays
The vector function returns the number of elements in a vector
size
The value in a ______ variable persists between function calls
static local
An array of string objects that will hold 5 names would be declared using which statement?
string names[5];
By using the same _____ you can build relationships between data stored in two or more arrays
subscript
To access an array element, use the array name and the element's ______
subscript
An element of a two-dimensional array is referred to by ________ followed by ________.
the row subscript of the element, the column subscript of the element
Which statement correctly uses C++ 11 to initialize a vector of ints named n with the values 10 and 20
vector<int> n { 10, 20 };
Which statement correctly defines a vector object for holding integers
vector<int> v;
If you leave out the size declarator in an array definition:
you must furnish an initialization list