AutoLISP Programming Tutorial - 1B Video Lecture - A complete Guide

so that is a structural portal if
statement then variable what is variable
variable is basically a location a name
to the location in a memory so that will
store the value then you can use set Q
function to give store the value in a
variable then variable naming it should
be alphanumerical then using extramental
sign you can view the value on the
AutoCAD command line then you see you
can use using experimental sign Oh
only you can use the variable within
AutoCAD command and then different types
of data what are the different data
types so there are integer VL and string
and list integer is any full number that
can be called as an integer so in this
case 5 is a integer in our case we have
said the said the fire to number
variable so this 5 is integer so integer
is any full or any number without any
decimal point so what is the real next
is real so real will be a number with
decimal points so suppose if I say here
set queue length length is the name of
the variable then I will say suppose
length is 20 point five zero so this
twenty point five zero is a real value
so here we can see that we can be with
the value of length variable also so
value of length variable is 20 point
five so length is also twenty point five
is a real number so any number with
decimal point can be called as real
number and string string will be cover
string will be any alphanumerical string
so you can suppose I want to say I will
say set Q suppose I will say company so
whenever you want to use a string value
you have to surround it by double quotes
so I will say suppose cadSoft so then
closing double quotes in closing bracket
for the or told statement and enter so
in this way you can string will be a
alphanumerical value with double quotes
around a to it so companies we will we
can say that company is suppose a string
variable basically then next is a list
variable this is very important variable
because number of times we will be
dealing with this variable so to set the
list here to say suppose the bracket
then set Q function the name of the
variable suppose I will say 0.1 then
list and when you want to use list you
always have to give single code before
the list because as we know after any
bracket next written thing will be s are
basically required to be a auto lips
function but in the case of lists it is
not a function it is a number therefore
we have to use single quotes so it
should the meaning of single quote ease
it should not evaluate that statement
and it should take it as it is so in
this way point one have a value of ten
to that we can say a coordinate suppose
say x and y so in this way list easier
so these are the four types of basic
datatypes using auto lips so we can used
all these are statement also so we can
try using suppose i want to create a
circle at coordinate tend to operate yes
suppose twenty point five so so for
twenty five five you length is the name
of the variable and the point one is the
variable of center so i will give here
the command circle c then he is asking
me for the center point so i will say
here exclamatory sign and i will give
point one so it has taken that center
point here then as a radius i will give
length suppose so I will say length n so
it has created a circle of twenty point
five radius so in this