[Andrew97]

I searched many times to know what is String and Stock and thesse things

PLease tell me what are this things ?

[Jonny5]

stock is a define for a function
it means if the function is not used then the compiler wont include it.

String: is a tag
Float: is a tag

you really should read the PAWN Language ref
and the wiki for samp!
its all in there

[Andrew97]

String:is a tag

Float:is a tag?

What is thesse?

[niyaz]

Floats are a type of tagged variable in PAWN and they are "floating point numbers", hence the name Float. This basically means that they support decimal places, such as 1.2, 1.1, 5.32, 64.21 - where as normal integers (untagged) can't support decimal places.

[MadeMan]

Read these:

https://sampwiki.blast.hk/wiki/Scripting_Basics#Strings

https://sampwiki.blast.hk/wiki/Keywords:Initialisers#stock