BASIC CONCEPTS

Before moving forward we have to learn some basic concepts which help us in practical programming:

OPERATORS:

These are basically symbols that perform operations on operants.

TYPES:

There are 4 main types:

1 1. Assignment

2 2. Mathematical

3 3. Logical

4 4. Relational

a. Assignment operator:

Operators which assigns value to data names

For example:

X=3, here X is data name and 3 is its value

Syntax:

(dataname)=expression(operators and aperants)

b. Mathematical operators:

The operators which perform manipulations and calculations

Symbol:

+, -, %, /, *

For example:

20-13%2/6*2+4=?

Order:

1. ( )

2. * / % (left to right)

3. + - (left to right)

Note: in one step only one step is performed

C. Relational:

Which relate different things

Symbols:

>=, >, <, <=, ==, !=, <>

d. logical operators:

which are either true or false

there are 3 logical operators:

AND, OR, NOT

NOT will reverse the value

AND will be true only all conditions have value true

OR will be true only one condition is true

NOT is unary operator and AND and OR are binary operators

truth table:

programming