?
Solved

I need a hex2str or hex2int function.

Posted on 1998-07-07
5
Medium Priority
?
2,627 Views
Last Modified: 2012-05-04

Hi,

I am in need of a function to transform hex strings (for ex: "1cf3bei4") to their
equivalent strings or unsigned long int.

Thank you.
0
Comment
Question by:zackeel
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
  • 2
5 Comments
 
LVL 84

Expert Comment

by:ozo
ID: 1251544
scanf("1cf3bei4","%lx",&i);
i=strtoul("1cf3bei4",(char **)NULL,16);
0
 
LVL 1

Accepted Solution

by:
vladimir_12345 earned 200 total points
ID: 1251545
Hi! It's simple:

#include <stdio.h>

long HexStr2Long(const char* szHexStr)
{
     unsigned long Result;
     sscanf(szHexStr, "%lx", &Result);
     return Result;
}

char* HexStr2DecStr(const char* szHexStr, char* szDecStr)
{
     sprintf(szDecStr, "%ld", HexStr2Long(szHexStr));
     return szDecStr;    
}

0
 
LVL 1

Expert Comment

by:vladimir_12345
ID: 1251546
Hi! A little error:
use        unsigned long HexStr2Long(const char* szHexStr)
instead of          long HexStr2Long(const char* szHexStr)
 

0
 
LVL 11

Expert Comment

by:alexo
ID: 1251547
ozo, why do you insist on posting perfectly good answers as comments?
0
 
LVL 84

Expert Comment

by:ozo
ID: 1251548
Well, I actually seem to have made a typo of scanf for sscanf,
But I figure it's up to the questioner to determine what's a perfectly good answer,
and I'd rather err on the safe side than have a reputation of posting
perfectly poor comments as answers.
And in this case, I didn't think I could give a complete answer,
not knowing what zackeel meant by «equivalent strings» for "1cf3bei4"
0

Featured Post

Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This tutorial is posted by Aaron Wojnowski, administrator at SDKExpert.net.  To view more iPhone tutorials, visit www.sdkexpert.net. This is a very simple tutorial on finding the user's current location easily. In this tutorial, you will learn ho…
Examines three attack vectors, specifically, the different types of malware used in malicious attacks, web application attacks, and finally, network based attacks.  Concludes by examining the means of securing and protecting critical systems and inf…
Video by: Grant
The goal of this video is to provide viewers with basic examples to understand and use for-loops in the C programming language.
Video by: Grant
The goal of this video is to provide viewers with basic examples to understand and use nested-loops in the C programming language.

770 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question