what is the difference between Auto Cad % solid work?? which is better ??

solidwork

Dear Eman Ahmed You are comparing the wrong products.
I might change the question to, "How long will it be till you have completed the training needed to customize a complex software package?" SolidWorks and Inventor are relatively new compared to AutoCAD.
There is a rather large, experienced userbase of AutoCAD customizers (as many as25 years of experience) you would have to compete with in the2-3 years (minimum) when you would have the needed experience.
Learn VBA and one of the modern CAD programs.
Solidworks makes use of Blocks, dynamic blocks no less.
Ive converted4 lines into individual blocks in a sketch to play with linkage ratios.
Really quick work.
You can import blocks from acad, create them mid sketch in SW or any number of other options along the way.
Solidworks for customizing routines.
Understanding macros/vba isnt needed but can be very useful.
No Lisp routines but SW Design Tables are a great way to put a lot of functionality into SW.
If you are proficient at excel you can do nearly anything and its very well integrated.
You can draw a part, create a design table and it will create the spreadsheet in excel to control the drawing.
from there you can create new configurations or simply edit that one.
The user interface can be as simple as entering numbers in a spreadsheet or as complex as using excel custom views, visual styles, data validation as well as the developer options that can make use of activeX controls.
How complex you get will depend on your experience with Excel but the functionality is all built in.
Creating macros is as easy as pressing the record button then going on your way.
If you have experience with Visual Basic this is an extremely helpful tool when dealing with automation.
If you have to work only in2d there is really no need to get into something like Solidworks but it can certainly handle the task.
I used Acad for many years and the only time I open it back up is either for this forum, or to double check files ive exported to send off to a third party.
AutoCAD is nothing but general drafting package but if you want to use AutoCAD like Solid work, you need to buy lots of add-on's from Autodesk.
Parts and assemblies of parts or documentation illustrations = Solidworks (hands down) Architectural layouts = AutoCad Sheet metal fab drawings = Solidworks2d = both are good within their respective frameworks, though in Solidworks you can "unwrap" a3d sheet metal object to get a flat part drawing from it, complete with releif cuts.
That's worth it's weight in gold if you know all the settings regarding metal stretching, and need to do that kind of thing.
Architecturally though, AutoCAD is a clear winner of2d.3d = Never seen a building and Site rendered in Solidworks, and I'm unaware if that's possible.
I'd still prefer AutoCAD for that type of thing.
Aside from that, Solidworks for3d parts, assemblies, and exploded assemblies.
Fabricator compatibility = Never had a problem with either, though we commonly had to export Solidwork files into DXF (AutoCAD) format, which required an add-on.
Customise commands and routines by yourself = AutoCAD Compatibility with other rendering /3d programs = SolidWorks.
(Autocad lost a lot of points on that a few years back, but works well with3ds MAX) I was impressed by Solidworks, personally coming from a long history of relying on AutoCAD.
I'd like to learn to use it better.
Parametric modelling and constraints were pretty damn cool, though AutoCAD has now started doing that too with release2010...
meaning I could now model both ways, I guess.

Basically auto cad is2d software,3d modeling is difficult in auto cad .But solid work having effective and easy3d modeling tan auto cadd.....so solid work is better

In fact both of them are the same. The mode of executing a task is different by commands. It's only my opinion. And, of course, we command the software not it all itself.

the better is  Autodesk Inventor