AutoLISP Programming Tutorial - 2A Video Lecture - A complete Guide

so in this second lecture we plan to
take fall on topics so we will be saving
as saying what are the editors are used
to create auto lease programs then what
is the structure of program and how to
load it then we will be also covering
the user in some of the user input
functions and display control functions
and we will also cover the concept of
comments so for auto lease programming
editor used is inbuilt so you can use is
from tools Auto lives which ellipse
editor so if there is no file is running
you can say new file maximized so a new
blank file will start so the auto lease
program will always start with left
parenthesis as we've seen in previous
lecture also so every statement or
portal it will start with left
parenthesis so as a target we will
develop here a program to create a sum
of two numbers as an example so so
program will start with left parenthesis
then you have to say different so this
is a different function this we will be
covering in detail in the coming later
so right now you just keep in mind so
different to be written then you have to
write C column C column and after that
you have to use the name of the command
that you want to give to your so when
this program will be loaded and from
what ellipse how to use that program you
have to use the command name so I will
give the name to this program as system
then you have to give two empty brackets
so after that I will press suppose enter
and every open bracket should be closed
so I will keep it closed this different
function so in between of this I will
have to write my program so suppose I
want to create a program for making sum
of two numbers so at first I have to
accept input from the user
so for taking the input from the user
you have to use user input functions so
if you want to take a integer number so
you have to use get int then you have to
give the message to the user so that
user will understand what you have to do
then to get the real number from the
user here to use gate real and you have
to give the message so suppose we want
to accept first number as integer so we
will write here in our program so at
first you will have to save that value
to some variable also so I will start
with set Q then I will give the number
name of the variable suppose I will say
number one then again bracket so I want
to take the input from the user so I am
using in gate int for accepting the user
input and after that I have to use the
message so I will say to the user enter
number one as it is a string so you have
to give double quotes so I will close
this bracket you will see that it is
indicating which bracket has been closed
so in this way every open bracket should
be closed so this is a I am using
integer getting to get the integer
number so I want second number to be
real so I will say again set Q suppose
number two is the next variable name
then I want to use the function gate
real so I will accept a real number from
the user so I am giving the message
entered number two so I will close the
string with double quotes then I will
give closing bracket so in this way I
accepted two numbers from the user so
after that I want to make the sum of
these two numbers so I will say set Q