Go4Expert - Simple question regarding splitting up a Hex number into a buffer

Go4Expert (http://www.go4expert.com/)

- C (http://www.go4expert.com/forumdisplay.php?f=20)

- - Simple question regarding splitting up a Hex number into a buffer (http://www.go4expert.com/showthread.php?t=18389)

pamela1985

6Jul2009 22:40

Simple question regarding splitting up a Hex number into a buffer

Hello,
I’m new to this forum and fairly new to programming.
I have a hexadecimal number that I wish to put into a buffer so I can display the 2 least significant bits, that is the two last digits. i.e the number look like this unsigned short = 0xFE18 but I’d like to display on the screen just “18”. Which is the best way to do this?
Thanks you so very much!

/Pamela

SaswatPadhi

6Jul2009 23:16

Re: Simple question regarding splitting up a Hex number into a buffer

Welcome to G4EF, Pamela :)

Don't know, if this is the best, bu you can do it this way:

(1) Print the hex number to a string:

Code: C

sprintf(MyString, "%x", 0xFE18);

(2) Print the last two chars of the string :

Code: C

printf("%s\n", MyString+(strlen(MyString)-2));

Complete test program:

Code: C

#include <cstdio>
#include <cstring>

int main()
{
    char MyString[10];
    sprintf(MyString, "%x", 0xFE18);
    printf("%s\n", MyString+(strlen(MyString)-2));
    return 0;
}

pamela1985

7Jul2009 00:03

Re: Simple question regarding splitting up a Hex number into a buffer

Thank you so much! :happy:
/pamela

SaswatPadhi

7Jul2009 05:34

Re: Simple question regarding splitting up a Hex number into a buffer

My pleasure :)

indiansword

7Jul2009 05:47

Re: Simple question regarding splitting up a Hex number into a buffer

pamela :) put this smiley in yahoo IM to see what it is " :X :-*" :)

All times are GMT +5.5. The time now is 09:29.