getting ascii value of a charater

[adekunleadekoya]

how can i get d ascii value of a character in tcl/tk?

 

[Bong]

Use scan.

scan - Parse string using conversion specifiers in the style of sscanf

SYNOPSIS
scan string format ?varName varName ...?


INTRODUCTION
This command parses fields from an input string in the same fashion as the ANSI C sscanf procedure and returns a count of the number of conversions performed, or -1 if the end of the input string is reached before any conversions have been performed. String gives the input to be parsed and format indicates how to parse it, using % conversion specifiers as in sscanf. Each varName gives the name of a variable; when a field is scanned from string the result is converted back into a string and assigned to the corresponding variable. If no varName variables are specified, then scan works in an inline manner, returning the data that would otherwise be stored in the variables as a list. In the inline case, an empty string is returned when the end of the input string is reached before any conversions have been performed.

DETAILS ON SCANNING
Scan operates by scanning string and format together. If the next character in format is a blank or tab then it matches any number of white space characters in string (including zero). Otherwise, if it isn't a % character then it must match the next character of string. When a % is encountered in format, it indicates the start of a conversion specifier. A conversion specifier contains up to four fields after the %: a *, which indicates that the converted value is to be discarded instead of assigned to a variable; a XPG3 position specifier; a number indicating a maximum field width; a field size modifier; and a conversion character. All of these fields are optional except for the conversion character. The fields that are present must appear in the order given above.
...
c
A single character is read in and its binary value is stored in the variable as a decimal string. Initial white space is not skipped in this case, so the input field may be a white-space character. This conversion is different from the ANSI standard in that the input field always consists of a single character and no field width may be specified.

so

scan "a" %c strA

results in $strA being 97


_________________
Bob Rashkin