Syntax   strint ( s : string [ , base : int ] ) : int

Description   The strint function is used to convert a string to an integer. The integer is equivalent to string s. The number base parameter is optional, for example, strint ("47") = 47. In Turing proper, the base is not allowed and is assumed to be 10.

String s must consist of a possibly null sequence of blanks, then an optional plus or minus sign, and finally a sequence of one or more digits. For number bases larger than 10, the digits can include a, b, c (alternately A, B, C ) which represent the digit values 10, 11, 12 The base, if given, must be in the range 2 to 36 (36 because there are 10 base ten digits and 26 letters). For example, strint ("FF", 16) = 255.

The intstr function is the inverse of strint, so for any integer i,

        strint ( intstr ( i ) ) = i.
See also   chr, ord, intstr and strnat functions.