Midterm

Modify the following program so it prints two blank lines between each line of text. #include <iostream> using namespace std; int main() { cout << "Two mandolins like creatures in the"; cout << "dark"; cout << "Creating the agony of ecstasy."; cout << " - George Barker"; return 0; }

#include <iostream> using namespace std; int main() { cout << "Two mandolins like creatures in the \n\n\n"; cout << "dark\n\n\n"; cout << "Creating the agony of ecstasy.\n\n\n"; cout << "- George Barker\n\n\n"; return 0; }

What will the following programs print on the screen? #include <iostream> using namespace std; int main() { int freeze = 32, boil = 212; freeze = 0; boil = 100; cout << freeze << endl << boil << endl; return 0; }

0 100

Assume w = 5, x = 4, y = 8, and z = 2. What value will be stored in result in each of the following statements? a. result = x + y; b. result = z * 2; c. result = y / x; d. result = y − z; e. result = w % 2;

12, 4, 2, 6, 1

What is the output of the following statement? cout << 5 * (15 / (1+3) );

15

What will the following code display? int x = 0; int y = 6; int z =4; x = y + z * 3;

18

What will the following programs print on the screen? #include <iostream> using namespace std; int main() { int a, x = 23; a = x % 2; cout << x << endl << a << endl; return 0; }

23 1

How would each of the following numbers be represented in E notation? a. 3.287 × 106 b. −978.65 × 1012 c. 7.65491 × 10−3 d. −58710.23 × 10−4

3.287E6 , -9.78E14, 7.65491E-3, -5.871023E0

What will the following programs print on the screen? #include <iostream> using namespace std; int main() { int x = 0, y = 2; x = y * 4; cout << x << endl << y << endl; return 0; }

8 2

Which one of the following would be an illegal variable name? A. dayofWeek B. 3dGraph C. June 1997 D. itemsorderedforthemonthforYEAR2015 E. _employee_num

B ( b/c you can't name a variable starting with a number)

What will the following programs print on the screen? #include <iostream> using namespace std; int main() { cout << "Be careful\n"; cout << "This might/n be a trick "; cout << "question\n"; return 0; }

Be careful This might/n be a trick question

What will the following programs print on the screen? #include <iostream> using namespace std; int main() { cout << "I am the incredible"; cout << "computing\nmachine"; cout << "\nand I will\namaze\n"; cout << "you."; return 0; }

I am the incrediblecomputing machine and I will amaze you

What is the output of the below C++ statements? int number = 10; cout << "The number is " << "number";

The number is number

In C++ , key words are written in all lowercase letter. True or false?

True

The negation operator is .

Unary

How many operands does each of the following types of operators require? ____ Unary ____ Binary ____ Ternary

Unary = 1 , Binary = 2, Ternary = 3

A group of statements, such as the contents of a function, is enclosed in . a. braces {} b. parentheses () c. brackets <> d. all of the above will do

a

Preprocessor directives begin with . a. # b. ! c. < d. * e. None of the above

a

When do preprocessor directives execute? a. Before the compiler compiles your program b. After the compiler compiles your program c. At the same time as the compiler compiles your program d. None of the above

a

Write assignment statements that perform the following operations with the variables a, b , and c: a. Adds 2 to a and stores the result in b. b. Multiplies b by 4 and stores the result in a. c. Divides a by 3.14 and stores the result in b. d. Subtracts 8 from b and stores the result in a. e. Stores the value 27 in a. f. Stores the character 'K' in c. g. Stores the ASCII code for 'B' in c.

a. b = 2 + a; b. a = 4 * b; c. b = a / 3.14; d. a = b - 8; e. a = 27; f. c = 'K'; g. c = 66;

Every C++ program must have a . a. cout statement b. function main c. #include statement d. All of the above

b

The following data 72 'A' "Hello World" 2.8712 are all examples of . a. variables b. literals or constants c. strings d. none of the above

b

In the below statement, "Hi There!" is a(n)____________. A. Variable B. String literal C. Comment D. Object E. None of the above

b ( String Literal)

Which of the following are not valid assignment statements? (Select all that apply.) a. total = 9; b. 72 = amount; c. profit = 129 d. letter = 'W';

b and c

Which of the following are not valid cout statements? (Select all that apply.) a. cout << "Hello World"; b. cout << "Have a nice day"\n; c. cout < value; d. cout << Programming is great fun;

b, c, and d

Every complete statement ends with a(n) . a. period b. # symbol c. semicolon d. ending brace

c

Which of the following statements is correct? a. #include (iostream) b. #include {iostream} c. #include <iostream> d. #include [iostream] e. All of the above

c

A(n) is like a variable, but its value is read-only and cannot be changed during the program's execution. a. secure variable b. uninitialized variable c. named constant d. locked variable

c. named constant

When typing your source code into the computer, you should be careful since most of your C++ instructions, header files, and variable names are ________.

case sensitive

How may the double variables temp, weight, and age be defined in one statement?

double temp, weight, age;

A variable named "average" should be declared as this data type, _________ , since it will hold data that contains decimal values.

float or double (either one is right)

How may the int variables months, days, and years be defined in one statement, with months initialized to 2 and years initialized to 3?

int months = 2, days, years =3;

Is the following comment written using single-line or multi-line comment symbols? */ This program was written by M. A. Codewriter*/

multi-line comment symbols

Is the following comment written using single-line or multi-line comment symbols? // This program was written by M.A. Codewritter

single-line comment symbols