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From: bonnett@seismo.CSS.GOV (H. David Bonnett)
Newsgroups: comp.std.c,comp.lang.c
Subject: Re: "1234" ==> 1234 (char * ==> int)
Message-ID: <49268@seismo.CSS.GOV>
Date: 12 Dec 90 22:38:26 GMT
References: <1990Dec12.215359.5378@cs.utk.edu>
Sender: usenet@seismo.CSS.GOV
Reply-To: bonnett@seismo.CSS.GOV (H. David Bonnett)
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Organization: Center for Seismic Studies, Arlington, VA
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In article <1990Dec12.215359.5378@cs.utk.edu>, lape@.cs.utk.edu (Bryon S. Lape) writes:
|> 
|> 	I need to know how to convert a string of numbers into an int.
|> For example, "1234" ==> 1234.  I am interested in all theories, so please
|> send whatever you know or think.  Also, please e-mail the responses.
|> 
|> 
|> Bryon

Well,
	Here is a code fragment that works for me. Ignore the incr/decr g
garbage... I got it to work and left it ;-)

Background:

	SunOS 4.1 with the Sun excuse for a compiler (non Ansi)
	pos is a char *
	num is an int;
	mtops & menu are both char * to strings
	mtops is composed of concatted runs of digits and non digit chars.
	This will extract an arbitrary length number from that string.

        {
           pos=(char*)strstr(mtops,menu);
           pos--;
           while (isdigit((int)*pos)) pos--; /* Got back until not digit */
           pos+=1;
           num=(int)strtol(pos,(char  **)NULL,10);
        }

Hope this helps..

-dave bonnett; Center for Seismic Studies
      bonnett@seismo.css.gov-