Transformar un String[4] en un Real

[marcoszorrilla]

En un principio parece te quedaría poner la coma a esa cadena y luego aplicar la función FloatToStr(X).

Unit

Sysutils

Category

floating point conversion routines

function StrToFloat(const S: string): Extended;

Description

Use StrToFloat to convert a string, S, to a floating-point value. S must consist of an optional sign (+ or -), a string of digits with an optional decimal point, and an optional mantissa. The mantissa consists of 'E' or 'e' followed by an optional sign (+ or -) and a whole number. Leading and trailing blanks are ignored.

The DecimalSeparator global variable defines the character that must be used as a decimal point. Thousand separators and currency symbols are not allowed in the string. If S doesn't contain a valid value, StrToFloat raises an EConvertError exception.

Un Saludo.