Contact US

Log In

Come Join Us!

Are you a
Computer / IT professional?
Join Tek-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Tek-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

hexadecimal (ascii) to int

hexadecimal (ascii) to int

hexadecimal (ascii) to int


I have this string "3A3B" (this is hexadecimal,2 bytes) and I want to convert to integer.

Do you know any function that do it?

Thank you very much.

RE: hexadecimal (ascii) to int

Use sscanf() with the %x conversion format.

If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.

RE: hexadecimal (ascii) to int


Thank you for your reply
I've never used this function before, very useful.
I am programming a PIC micro and this function is not included
in <stdio.h>, it's a shame, I'll have to do this function myself.

RE: hexadecimal (ascii) to int

Try looking in stdlib.h or string.h.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Tek-Tips Forums free from inappropriate posts.
The Tek-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Tek-Tips forums is a member-only feature.

Click Here to join Tek-Tips and talk with other members! Already a Member? Login

Close Box

Join Tek-Tips® Today!

Join your peers on the Internet's largest technical computer professional community.
It's easy to join and it's free.

Here's Why Members Love Tek-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close