Mod 3

Question 1

Four basic data types

Answer 1

Character integer float boolean

Question 2

//

                                     /*

                                     */

Answer 2

Comments - compiler ignores everything after the comment until the end of the line.

Single line comment
Start multiple line comment
Stop multiple line comment

Question 3

Four essential Loop actions

I
C
C
B

Answer 3

Initialization: assigns initial value

Condition: evaluate the control variable to determine whether the loop should execute or not

Change: changes the value of the control variable to ensure the loop as a means to exit.

Body: statements defined between the opening and closing curly braces of the for Loop.

Question 4

If
Else if
Else
Are all what?

Answer 4

If statements

Question 5

!
&&
| |

These are what kind of statements and what are their names.

Answer 5

Decision statements
Not
And
Or

Question 6

What is a constant?

Answer 6

A named memory location whose value cannot change

Question 7

What is a variable

Answer 7

A named memory location

Question 8

What are the four program structural components?

D
I
P
O

Answer 8

Declarations: storage for data being workedwith.

Input: allows acquisition of data from a source.

Processing: manipulating data to arrive at a result.

Output: provides processed data to find a destination. Could be a monitor a file on the hard drive or a web page

Question 8

What are the four program structural components?

D
I
P
O

Answer 8

Declarations: storage for data being workedwith.

Input: allows acquisition of data from a source.

Processing: manipulating data to arrive at a result.

Output: provides processed data to find a destination. Could be a monitor a file on the hard drive or a web page

Question 9

———–>

What is this symbol called?

Answer 9

flow line

It shows the direction of program flow on a flowchart.

Question 10

What is the flowchart symbol for a predefined process?

Answer 10

The symbol should be a rectangle with two thin vertical rectangles on either side.

Question 11

What is the flowchart symbol for decision?

Answer 11

The symbol is a daimond it represents Branch based boolean decision making. Has a true or false output.

Question 12

What is the flowchart symbol for input/output?

Answer 12

It should look like a parallelogram and represents input from user or output to a display.

Question 13

What is the flowchart symbol for terminal?

Answer 13

Terminal is represented by an oval and represents a programs start or stop point.

Question 14

What is the flowchart symbol for process?

Answer 14

The symbol is a rectangle and it represents an action to be executed.

Question 15

int my number = 0;

Is a?

Answer 15

Integer

Question 16

float myNumber = 0.0;

Is a?

Answer 16

Float

Question 17

char meLetter = ‘A’

Is a?

Answer 17

Character

Question 18

bool mybool = true;

Is a?

Answer 18

Boolean variable

Question 19

Two terms associated with strings?

Answer 19

Index and element

Question 20

What does concatenation do?

Ex below

std: :String str1 = “you got “;
std: :String str2 =”that right”;
std: :String str3 = str1+” “+str2;

Answer 20

It’s the process of joining two strings.

Question 21

Name the symbols and the group they belong to.
\n
\t
\0
\"
\\

Answer 21

Group is escape characters.
New line
Tab
Null if it's inside a string
Double quote if inside a string
Single slash back inside a string

Question 22

What type and what do they represent?
STDOUT
STDERR
STDIN

Answer 22

They are input/output types
STDOUT- OUTPUT TO A MONITOR
STDERR-STANDARD ERROR
STDIN-STANDARD INPUT

Question 23

What is

COUT

Answer 23

Output to display

Question 24

What is

CERR

Answer 24

Displays error messages on the screen.

Question 25

What is

CIN

Answer 25

Input, program received information.

Question 26

What does,
std::cin
do?

Answer 26

Reed’s numbers single line characters and strings of letters stops at White spaces if multiple lines are typed

Question 27

What does
get line()
Do?

Answer 27

Reads all data including white spaces.

Question 28

What is
ws()
used for?

Answer 28

It’s placed on the line previous to getline() when using a program that mixes both getline() and cin when receiving an input. Reads white spaces.