Re: Convert ASCII code to equivalent numerical value
- Posted by lgregg Jan 15, 2019
- 1152 views
given:
integer key
key = wait_key
If the key pressed is 1, then the value in key = 49.
I need a value of 1.
I could say:
key -= 48
Is there a more sanitary way?
Take a look in the manual for the following:
8.3.4.7 prompt_number
include std/console.e
namespace console
public function prompt_number(sequence prompt, sequence range)
Prompts the user to enter a number, and returns only validated input.
Parameters:
st : is a string of text that will be displayed on the screen. (should be prompt)
s : is a sequence of two values {lower, upper} which determine the range of values that the user may enter. s can be empty, {}, if there are no restrictions. (should be range)
Returns:
An atom, in the assigned range which the user typed in.
