CSCI 1933 Practice Final

The ________ causes the contents of another file to be inserted into a program.

#include directive

What is the modulus operator?

%

Which line in the following program contains a call to the showDub function? 1 #include <iostream> 2 using namespace std; 3 4 void showDub(int); 7 { 8 int x = 2; 9 10 showDub(x); 11 cout << x << endl; 12 return 0; 13 } 14 15 void showDub (int num) 16 { 17 cout << (num*2) <<endl; 18 }

10 showDub(x);

Assume that a program has the following string object definition: string name; Which of the following statements correctly assigns a string literal to the string object? a) >name = (Jane); b) name=Jane; c) name='Jane'; d) name = "Jane";

name = "Jane";

If you place a semicolon after the test expression in a while loop, it is assumed to be a(n):

null statement

The do-while loop is a(n) ________ loop that is ideal in situations where you always want the loop to iterate at least once.

post-test

When the increment operator precedes its operand, as in ++num1, the expression is in this mode.

prefix

Even when there is no power to the computer, data can be held in:

secondary storage

This vector function returns the number of elements in a vector.

size

A for statement contains three expressions: initialization, test, and

update

You may define a ________ in the initialization expression of a for loop.

variable

In C++ 11, the ________ tells the compiler to determine the variable's data type from the initialization value.

variable's name

When a relational expression is false, it has the value ________.

zero

True/False: A variable called "average" should be declared as an integer data type because it will probably hold data that contains decimal places.

False

True/False: C++ 11 introduces an alternative way to define variables, using the template key word and an initialization value.

False

True/False: Escape sequences are always stored internally as a single character.

False

True/False: If you do not follow a consistent programming style, your programs will generate compiler errors.

False

True/False: The condition that is tested by a while loop must be enclosed in parentheses and terminated with a semicolon.

False

True/False: You may not use the break and continue statements within the same set of nested loops.

False

These are used to declare variables that can hold real numbers.

Floating point data types

Besides decimal, two other number systems you might encounter in C++ programs are:

Hexadecimal and Octal

What will the following code display? cout << "Monday"; cout << "Tuesday"; cout << "Wednesday";

MondayTuesdayWednesday

If a function is called more than once in a program, the values stored in the function's local variables do not ________ between function calls.

Persist

The while loop is this type of loop.

Pre-test

A statement that starts with a # symbol is called a:

Preprocessor directive

Computer programs are also known as:

Software

What will the following code display? int number = 7; cout << "The number is " << "number" << endl;

The number is number

Something within a while loop must eventually cause the condition to become false, or a(n) ________ results.

infinite loop

In a for statement, this expression is executed only once.

initialization

The while loop contains an expression that is tested for a true or false value, and a statement or block that is repeated as long as the expression:

is true

This is a control structure that causes a statement or group of statements to repeat.

loop

What will be the value of result after the following code has been executed? int a = 60; int b = 15; int result = 10; if (a=b) result*=2;

20

What will the value of x be after the following statements execute? int x; x=18.0/4;

4

What will the following code display? int number = 6 int x = 0; x = --number; cout <<x<< endl;

5

Assuming you are using a system with 1-byte characters, how many bytes of memory will the following string literal occupy? "William"

8

Look at the following statement. while (x++ < 10) Which operator is used first?

<

If you want a user to enter exactly 20 values, which loop would be the best to use? a)for b)do-while c)infinite d)while e)none of these

A) For loop

The while loop has two important parts: an expression that is tested for a true or false value, and: A) a statement or block that is repeated as long as the expression is true B) a statement or block that is repeated only if the expression is false C) one line of code that is repeated once, if the expression is true D) a statement or block that is repeated once, if the expression is true

A) a statement or block that is repeated as long as the expression is true

This operator increments the value of its operand, then uses the value in context. A) prefix increment B) postfix increment C) prefix decrement D) postfix decrement E) None of these

A) prefix increment

These are operators that add and subtract one from their operands. A) plus and minus B) ++ and -- C) binary and unary D) conditional and relational E) None of these

B) ++ and --

What is the output of the following code segment? n = 1; while (n <= 5) cout << n << ' '; n++; A) 1 2 3 4 5 B) 1 1 1... and on forever C) 2 3 4 5 6 D) 1 2 3 4 E) 2 3 4 5

B) 1 1 1... and on forever

This statement may be used to stop a loop's current iteration and begin the next one.

Continue

This is a variable that is regularly incremented or decremented each time a loop iterates.

Counter

The purpose of a memory address is:

To identify the location of a byte in memory

True/False: A preprocessor directive does not require a semicolon at the end.

True

True/False: Each individual element of an array can be accessed by the array name and an element number, called a subscript.

True

True/False: Escape sequences are always stored internally as a single character.

True

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

True

The name for a memory location that may hold data is:

Variable

________ represent storage locations in the computer's memory.

Variables

To assign the contents of one array to another, you must use ________.

a loop to assign the elements of one array to another array.

A loop that is inside another loop is called:

a nested loop

The statements in the body of a while loop may never be executed, whereas the statements in the body of a do-while loop will be executed:

at least once

Every complete C++ program must have a ________. a) comment b) function named <font face="Courier New">main</font> c) preprocessor directive d)symbolic constant e)<font face ="Courier New">cout</font> statement

b) function named <font face="Courier New">main</font>

This means to increase a value by one.

increment