Added parse_string function (sscanf does not work correct)
Fixed issue with sscanf
Fixed parse_string function (now in double)
Data string now is of type double
Made rpnData type for one-array-expression with numbers and operators
Changed making reverse polish notation for rpnData
Added condition for while
Fixed reverse polish notation making
Added calculation (needs to fix with 4+ operators)
Merge branch 'stringParsing'