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C++ Early Objects, Ninth Edition - Mid Term practice

C++ Early Objects, Ninth Edition - Mid Term practice

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Section 1

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A file must be ________ before data can be written to or read from it. A) closed B) opened C) buffered D) initialized

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Cards (50)

Section 1

(50 cards)

A file must be ________ before data can be written to or read from it. A) closed B) opened C) buffered D) initialized

Front

B) opened

Back

A file ________ is a small holding section of memory that file-bound information is first written to. A) name B) number C) buffer D) segment

Front

C) buffer

Back

The statements written by the programmer are called: A) Syntax B) Object code C) Source code D) Runtime libraries

Front

C) Source code

Back

Which is true about the following statement? cout << setw(4)<< num4 << " "; A) It allows four spaces for the value in the variable num4. B) It outputs "setw(4)" before the value in the variable num4. C) It should use setw(4) to output the value in the variable num10. D) It inputs up to four characters stored in the variable num4.

Front

A) It allows four spaces for the value in the variable num4.

Back

How many times will the following loop display "Hello"? for (int i = 1; i < 20; i++) cout << "Hello!" << endl; A) 20 B) 19 C) 21 D) An infinite number of times

Front

B) 19

Back

When the increment operator precedes its operand, as in ++num1, the expression is in this mode. A) postfix B) prefix C) preliminary D) binary

Front

B) prefix

Back

What is the value of average after the following code executes? double average = 1.0 + 2.0 + 3.0 / 3.0; A) 2.0 B) 4.0 C) 1.5 D) 6.0

Front

B) 4.0

Back

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);

Front

B) name = "Jane";

Back

What statement best describes a variable and its primary purpose? A) A variable is a structured, general-purpose language designed primarily for teaching programming. B) A variable is a collection of eight bits. C) A variable is a word that has a special meaning to the compiler. D) A variable is a named storage location in the computer's memory used for holding a piece of information. E) A variable is a "line" of code in the body of a program, which may change.

Front

D) A variable is a named storage location in the computer's memory used for holding a piece of information.

Back

You can use these to override the rules of operator precedence in a mathematical expression. A) [Brackets] B) (Parentheses) C) {Braces} D) The escape character \

Front

B) (Parentheses)

Back

The programming process consists of several steps, which include: A) Input, Processing, and Output B) Key Words, Operators, and Punctuation C) Design, Creation, Testing, and Debugging D) Syntax, Logic, and Error Handling

Front

C) Design, Creation, Testing, and Debugging

Back

In a C++ program, two slash marks ( // ) indicate: A) The end of statement B) The beginning of a comment C) The end of the program D) The beginning of a block of code

Front

B) The beginning of a comment

Back

Which of the following is not one of the five major components of a computer system? A) Preprocessor B) The CPU (central processing unit) C) Main memory D) Input/Output device E) Secondary storage device

Front

A) Preprocessor

Back

________ represent storage locations in the computer's memory. A) Literals B) Variables C) Comments D) Integers

Front

B) Variables

Back

What is the value of the following expression? true || true A) true B) false C) -1 D -2

Front

A) true

Back

The first step in using the string class is to #include the ________ header file. A) iostream B) cctype C) cmath D) string

Front

D) string

Back

This is a control structure that causes a statement or group of statements to repeat. A) decision statement B) constant C) loop D) cout object

Front

C) loop

Back

This operator represents the logical AND. A) ++ B) | | C) && D) @ E) None of these

Front

C) &&

Back

Computer programs are also known as: A) hardware B) firmware C) Correct answer D) software E) silverware

Front

C) Software

Back

________ reads a line of input, including leading and embedded spaces, and stores it in a string object. A) cin.get B) getline C) cin.getline D) get

Front

getline

Back

When this operator is used with string operands it concatenates them, or joins them together. A) & B) * C) % D) +

Front

D) +

Back

Whereas < is called a relational operator, x < y is called a(n) ________. A) Arithmetic operator B) Relative operator C) Relational expression D) Largeness test E) None of these

Front

C) Relational expression

Back

When the final value of an expression is assigned to a variable, it will be converted to: A) The smallest C++ data type B) The largest C++ data type C) The data type of the variable D) The data type of the expression

Front

C) The data type of the variable

Back

An Integrated Development Environment typically consists of: A) A text editor B) A compiler C) A debugger D) All of the above E) None of the above

Front

D) All of the above

Back

The function, pow(x, 5.0), may require this header file. A) cstdlib B) cmath C) cstring D) iostream E) iomanip

Front

B) cmath

Back

In C++ the = operator indicates: A) equality B) assignment C) subtraction D) negation E) None of these

Front

B) assignment

Back

When a relational expression is false, it has the value ________. A) one B) zero C) zero, one, or minus one D) less than zero E) None of these

Front

B) zero

Back

Which statement is equivalent to the following? x = x * 2 A) x * 2; B) x *= 2; C) x = x * x; D) None of these

Front

B) x *= 2;

Back

This operator takes an operand and reverses its truth or falsehood. A) || B) relational C) arithmetic D) ! E) None of these

Front

D) !

Back

Character constants in C++ are always enclosed in ________. A) [brackets] B) "double quotations marks" C) 'single quotation marks' D) {braces} E) (parentheses)

Front

'single quotation marks'

Back

This is a set of rules that must be followed when constructing a program. A) Syntax B) Punctuation C) Portability D) Operators E) Key Words

Front

A) Syntax

Back

The ________ causes a program to wait until information is typed at the keyboard and the Enter key is pressed. A) Output stream B) cin object C) cout object D) Preprocessor

Front

B) cin object

Back

Which data type typically requires only one byte of storage? A) short B) int C) float D) char E) double

Front

D) char

Back

At the heart of a computer is its central processing unit. The CPU's job is: A) To fetch instruction B) To carry out the operations commanded by the instructions C) To produce some outcome or resultant information D) All of the above E) None of the above

Front

D) All of the above

Back

This statement may be used to stop a loop's current iteration and begin the next one. A) break B) terminate C) re-iterate D) continue

Front

D) continue

Back

What is the value of number after the following statements execute? int number = 10; number += 5; number -= 2; number *= 3; A) 3 B) 30 C) 39 D) 2

Front

C) 39

Back

What will the value of x be after the following statements execute? int x; x = 18.0 /4; A) 4.5 B) 4 C) 0 D) unknown

Front

B) 4

Back

This is a variable that is regularly incremented or decremented each time a loop iterates. A) constant B) counter C) control statement D) null terminator

Front

B) counter

Back

Internally, the CPU consists of two parts: A) The Output Device and the Input Device B) The Software and the Hardware C) The Control Unit and the Arithmetic and Logic Unit D) The Single-task Device and the Multi-task Device

Front

C) The Control Unit and the Arithmetic and Logic Unit

Back

This loop is a good choice when you know how many times you want the loop to iterate in advance of entering the loop. A) do-while B) while C) for D) infinite

Front

C) for

Back

This is used to mark the end of a complete C++ programming statement. A) Pound Sign B) Semicolon C) Data type D) Void

Front

B) Semicolon

Back

These are operators that add and subtract one from their operands. A) plus and minus B) ++ and -- C) binary and unary D) condional and relational

Front

B) ++ and --

Back

The ________ is/are used to display information on the computer's screen. A) Opening and closing braces B) Opening and closing quotation marks C) cout object D) Backslash

Front

C) cout object

Back

In memory, C++ automatically places a ________ at the end of string literals. A) Semicolon B) Quotation marks C) Null terminator D) Newline escape sequence E) None of the above

Front

C) Null terminator

Back

A for statement contains three expressions: initialization, test, and A) update B) reversal C) null D) validation

Front

A) update

Back

This is used in a program to mark the beginning or ending of a statement, or separate items in a list. A) Separators B) Punctuation C) Operators D) Key Words

Front

B) Punctuation

Back

A(n) ________ is a set of instructions that the computer follows to solve a problem. A) Compiler B) Linker C) Program D) Operator E) None of the above

Front

C) Program

Back

If you want a user to enter exactly 20 values, which loop would be the best to use? A) do-while B) for C) while D) infinite

Front

B) for

Back

This step will uncover any syntax errors in your program. A) Editing B) Compiling C) Linking D) Executing

Front

B) Compiling

Back

To use the rand() function, you must #include this header file in your program. A) iostream B) iomanip C) iorand D) cstdlib

Front

D) cstdlib

Back