[fpc-pascal] Something like "Is a number"?

[Thomas Zastrow]

John Coppens wrote:

>On Fri, 08 Jul 2005 16:39:05 +0200
>Thomas Zastrow <chef at thomas-zastrow.de> wrote:
>
>  
>
>>Hello,
>>
>>I'm converting some strings with "strtoint" into integers. But
>>sometimes the string can't be converted to a number. Is there a
>>function which takes a string and tells me if it is possible or not to
>>convert it into a number? Something like "IsANumber(string)"
>>
>>    
>>
>You can use val(str, int/real, err)
>
>if err is 0, the string was converted to an integer or real (depending on
>the type of int/real.
>
>John
>  
>
Thank you, it's working!!!

Greetings,

Tom