[oggylt]

Ok today i got pwned by pawn when i din`t knew how to make universal calculator like i enter string "(5+5)/2" and placing it into

Код:

answer=string

in my eyes that should look

Код:

answer=(5+5)/2

but it looked a way different, so have anyone any sugestions how to calculate string it can by step b step method like "chose: symbol or number ", "select symbol", "symbol added" and so on, hope you understand me and thanks in advance
step by step i mean that i pick number:

Код:

formula=15

then pick symbol +-*/ () sqrt this time (

Код:

formula=15(9

then symbol *
and then 9
and lastly )
i press finish
and i get answer to that one formula

Код:

formula=15(9*9)