Programming Fundamentals I Cheat Sheet by ghostrogue

Main memory is directly connected to the CPU.

T

The devices that feed data and programs into computers are called output devices.

F

The device that stores inform­ation perman­ently (unless the device becomes unusable or you change the inform­ation by rewriting it) is called primary storage.

F

When you compile your program, the compiler identifies the logic errors and suggests how to correct them.

F

C++ programs have always been portable from one compiler to another.

F

The basic commands that a computer performs are ____, and perfor­mance of arithmetic and logical operat­ions.

input, output, storage

The ____ is the brain of the computer and the single most expensive piece of hardware in your personal computer.

CPU

The devices that feed data and programs into computers are called ____ devices.

input

____ programs perform a specific task.

Applic­ation

____ represent inform­ation with a sequence of 0s and 1s.

Digital Signals

The digit 0 or 1 is called a binary digit, or ____.

bit

____ consists of 65,536 charac­ters.

Unicode

A program called a(n) ____ combines the object program with the programs from libraries.

linker

A step-b­y-step proble­m-s­olving process in which a solution is arrived at in a finite amount of time is called a(n) ____.

algorithim

A(n) ____ consists of data and the operations on those data.

object

In C++, reserved words are the same as predefined identi­fiers.

F

The maximum number of signif­icant digits in float values is up to 6 or 7.

T

If a C++ arithmetic expression has no parent­heses, operators are evaluated from left to right.

T

Suppose a = 5. After the execution of the statement ++a; the value of a is 6.

T

A comma is also called a statement termin­ator.

F

The ____ rules of a progra­mming language tell you which statements are legal, or accepted by the progra­mming language.

Syntax

Which of the following is a legal identi­fier?

program_1

____ is a valid char value.

'A'

(2X) The value of the expression 33/10, assuming both values are integral data types, is ____. // The value of the expression 17 % 7 is ____.

3

The expression static­_ca­st(6.9) + static­_ca­st(7.9) evaluates to ____.

13

In a C++ program, one and two are double variables and input values are 10.5 and 30.6. After the statement cin >> one >> two; executes, ____.

one = 10.5, two = 30.6

Choose the output of the following C++ statement: cout << "­Sunny " << '\n' << "Day " << endl;

Sunny Day

____ are executable statements that inform the user what to do.

prompt lines

Suppose that alpha and beta are int variables and alpha = 5 and beta = 10. After the statement alpha *= beta; executes, ____.

alpha = 50

Insertion Point 1

alpha = beta; beta = beta + 1;

In the statement cin >> x; , x can be a variable or an expression

F

The number of input data extracted by cin and >> depends on the number of variables appearing in the cin statement.

T

When reading data into a char variable, after skipping any leading whitespace charac­ters, the extraction operator >> finds and stores only the next character; reading stops after a single character.

T

If input failure occurs in a C++ program, the program terminates immedi­ately and displays an error message.

F

You can use the function getline to read a string containing blanks

T

Suppose that x and y are int variables. Which of the following is a valid input statement?

cin >> x >> y;

Suppose that x is an int variable, ch is a char variable, and the input is: 276.

B ch = '2', x = 76

Suppose that x is an int variable, y is a double variable, z is an int variable, and the input is: 15 76.3 14 Choose the values after the following statement executes: cin >> x >> y >> z;

x = 15, Y = 76 . 3 , z = 14

Suppose that x and y are int variables, z is a double variable, and the input is: 28 32.6 12

x = 28, Y = 32, z = 0.6

Suppose that ch1 and ch2 are char variables, alpha is an int variable, and the input is: A 18 What are the values after the following statement executes? cin.ge­t(ch1); cin.ge­t(ch2); cin >> alpha;

ch1 = 'A', ch2 = , " alpha = 18

When you want to process only partial data, you can use the stream function ____ to discard a portion of the inp

ignore

Suppose that ch1 and ch2 are char variables and the input is: WXYZ What is the value of ch2 after the following statements execute? cin.ge­t(ch1); cin.pu­tba­ck(­ch1); cin >> ch2;

W

In C++, the dot is an operator called the ____ operator.

member access

x = 55.68, y = 476.859, and z = 23.8216. statem­ents? cout << fixed << showpoint; cout << setpre­cis­ion(3); cout << x << ' ' << y << ' ' << setpre­cis­ion(2) << z << endl;

55.680 476.860 23.82

What is the output of the following statem­ents? cout << setfil­l('*'); cout << "­123­456­789­012­345­678­90" << endl cout << setw(5) << "­18" << setw(7) << "­Hap­py" << setw(8) << "­Sle­epy­" << endl

123456­789­012­345­67890 18Happy*Sleepy

____ is a parame­terized stream manipu­lator.

setfill

Consider the following program segment. ifstream inFile; //Line 1 int x, y; //Line 2 ... //Line 3 inFile >> x >> y; //Line 4 Which of the following statements at Line 3 can be used to open the file progda­ta.dat and input data from this file into x and y at Line 4?

inFile.op­en(­"­pro­gda­ta.d­at­");