**This is a continuation from:**

**Understanding Basic Language**

**Mathematical Operators**

To
carry out arithmetic operations in programming language, mathematical operators
are used. Some of these operators are given below:

Operations Operator

Addition +

Subtraction -

Multiplication x

Division /

Greater
than >

Lesser
than <

Exponential ^

Non
equal <>

**Expressions**

An
expression is something the interpreter calculates (or evaluates).

Some
examples given below:

A
= 24

B
= 25

C
= A + B (returns 49)

A
= 120

B
= 12

C
= A / B (returns 10)

A
= 34

B
= 26

C
= A - B (returns 8)

A
= 200

B
= 100

C
= (A * 3) + B (returns 700)

A
= 3

B
= 2

C
= A ^ B (returns 9)

###
Evaluate
the following:

100
+ 50/2 =

100
+ 5 – 90 =

82
– (3 x 20 + 4) =

3

^{2}– 2^{3}=
40
/ 21 + (20 – 2) =

When
the Basic Interpreter is loaded into the memory of the computer, the Basic
Interface screen will open.

Type your first
program:

**10 PRINT “Welcome to the World of BASIC”**

Press F2 to run
the program. You will see the output as follows:

Press
any key to return to the main screen.

**Some Important Commands**- A

*command*tells the Basic Interpreter to perform a certain task.

Try
the following examples

PRINT
5 + 10 * 2

25

PRINT
“ROSE & LOTUS”

ROSE
& LOTUS

PRINT
“COMPUTER”

COMPUTER

PRINT
3 ^ 2 * 5

45

PRINT
“SACHIN”

SACHIN

PRINT
“Rahul” ; “Dravid”

RahulDravid

PRINT
“Rahul” , “Dravid”

Rahul Dravid

If
a

**List of Instructions**has to be given, line numbers will have to be used.
Try the
following examples:

10 PRINT 100

20 END

RUN

100

OK

10 PRINT 15

20 PRINT 15 + 15

30 END

RUN

15

30

OK

10
PRINT “THE LOST”

20
PRINT “WORLD”

30
END

RUN

THE
LOST

WORLD

OK

10
PRINT “ROHIT”

20
END

30
PRINT “RAM”

RUN

ROHIT

OK

**END**: The last statement of a program is END. END terminates the program. It means that the program is complete and the computer will ignore any line number given after the END statement.

**POINTS TO REMEMBER**

- PRINT
statement displays anything written after it. It may be data or result.

- END statement
is used to terminate the program.

- Once program
is over, RUN command is given to execute the program.

- When a
Computer has to do more than one calculation then it follows

**BODMAS**Rule.
B
à
Brackets

O
à Of

D
à
Division

M
à
Multiplication

A
à
Addition

S
à
Subtraction

**State “True” or “False”**

1) PRINT command
cannot be given with line numbers.

2) For division
we use “ / “ sign.

3) Non-Numeric
data is displayed as it is.

4) The computer
will ignore any line number given after END statement.

5) Non-Numeric
information is written in double quotation marks.