if statement question

[JR]

Hey i got a binary convertion program and i was wondering how do i check if the number that was entered by the user only has 1's and 0's ?

[Tony]

convert to string, then loop though characters.

Turing:

var text : string := intstr (1001200) for i : 1 .. length (text)     if text (i) = "1" or text (i) = "0" then         put text (i)     else         put "foo"     end if end for

now obviously instead of saying "foo", you'll simply quit the loop and show an error.

[jamonathin]

use a for loop to check every character in the string/int variable. And in that for loop use an if statement that says if the character at the for loop number is equal to 1 or 0 then do whatever.
p.s. run the for loop for the legnth of the binary. if your binary is int, use length(intstr(binary))
EDIT: man i type slow. .