The document consists of questions and answers related to programming concepts such as variable types, declarations, and arithmetic operations. It explores different data types used for storing values in programming, including single, double, integer, and boolean, along with the distinction between variables and constants. The document also includes a true/false section regarding key programming rules and operations.

1. Computer – Third Prep. – Second term
Chapter One
Representation of data
First Question:
Complete
Youssef wanted to calculate area of a circle so h wrote the following
program:
Const Pi As Single = 3.14
Dim R As Single
Dim Area As Double
R = 1000
Area = Pi * R * R
MsgBox( Area )
1. Youssef used the numeric variable R of type … to store the value ….
2. He used also numeric constant … of the data type single to store the
value ….
3. Youssef used the numeric variable … of data type …to store … which
is equal to Pi*R2
.
4. Numeric variable was declared using the keyword (Dim), the constant
Pi was declared using the keyword ….
1 Single 1000
2 Pi 3.14
3 Area Double

2. Second question:
Choose the correct answer:
(Dim, Const, String, Single)
1. Khaled wanted to calculate total grade of a student so he declared
numeric variables using the word…
2. He used a variable of data type …. To store student name.
3. He used a variable of data type… to store the total grade.
1 2 3
Dim String Single

3. Question three:
Choose the correct Answer:
1. The numeric variable that stores only whole numbers from 0 – 255
is of data type (Byte – Integer – String)
2. A variable of type (Boolean – Integer – String) stores the values
truefalse.
3. To store a digit with decimal points(fractions) we use a variable of
data type (Integer – Short – Single).
4. To store whole numbers only we use a variable of data type
(Single – Double Integer).
5. One of the variable naming rules is that the name has
( to start with 9Digit – Letter – Any symbol).
6. The word (Dim – Const – End) is used to declare variables.
7. The word (Dim – Const – End) is used to declare constants in a
program.
8. The command (Const/As – Din/As – Try/Catch) to discover
program errors and to deal with it.
9. On executing the equation (4*3+2), the result will be (9 - 20 - 14).
10.The result of the arithmetic operation (2^3+1) is (10 – 16 – 9).
1 2 3 4 5 6 7 8 9 10
Byte Boolean Single Integer Letter Dim Const TryCatch 14 9

4. Fourth Question:
Put () or (X):
1. Data stores that can change their values during program execution are
called variables ( )
2. Data stores that can change values during program execution are
called constants
( ).
3. Variable of type integer can store whole numbers from 0 to 255 ( ).
4. Variables of data type byte stores whole numbers from 0 to 255 ( ).
5. Boolean variables stores the values “true” or “false” ( ).
6. To store fractional numeric values we use types Integer or Short ( ).
7. To store numeric values with fractions we use the data types Double
or Single ( ).
8. One of the variable naming rules is to start the name with a letter ( ).
9. The words (Dim, Integer or Double) can be used as variable names
( ).
10.The word “Dim” is used to declare variables inside the program ( ).
11.The word “Const” is used to declare constants inside the program ( ).
12.Commands (Try/Catch) are used to discover and deal with program
errors ( ).
13.From Precedence rules is Addition precedes division on program
execution ( ).
14.From Precedence operation is that multiplication operation precedes
subtraction operation on program execution ( ).
15.Executing Brackets precedes other operation on program execution ( ).
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
 x x   x   x  x  x  