printf("04x",short) - negitive hex giving me problems

[KairosDrasis]

Hello all,

First I want to thank everyone who answer my previous question. I think that's the fastest response I ever had on the web.

Well I'm back again with more questions for this class assignment. We have to write a function to do a so-called "memory dump" (but instead of a text file, we are just dumping straight into the command prompt)

so we need to produce an output like this:

0x3000: 2c39 e03a f022 da01 0e03 000b 5020 c1c0  ,9.:."......P ..
0x3008: 1b61 2031 1140 0cd9 f025 6200 0423 72c0  .a 1.@...%b..#r.
0x3010: 1021 16e1 0ffa 1dbf 7f80 2056 2220 1009  .!........ V" ..

and instead I get this:

0x3000: 2c39 ffffe03a fffff022 ffffda01 0e03 000b 5020 ffffc1c0 9,:."....... P..
0x3008: 1b61 2031 1140 0cd9 fffff025 6200 0423 72c0 a.1 @...%..b#..r
0x3010: 1021 16e1 0ffa 1dbf 7f80 2056 2220 1009 !.........V  "..

So you can see the negative hex numbers are sign-extended... which looks bad. currently I'm using this code to print out each hex number:
printf("%04x ",*shortPointer);

any simple way to force it not to sign extend?

Thanks,
Kairos

[Codeplug]

Variable arguments go through a implicit conversion to int. So you're going from short->int which is where your sign extension is coming from. To prevent the sign extension, make it an unsigned short first.

printf("%04x ", (unsigned short)*shortPointer);

gg

[KairosDrasis]

Variable arguments go through a implicit conversion to int. So you're going from short->int which is where your sign extension is coming from. To prevent the sign extension, make it an unsigned short first.

printf("%04x ", (unsigned short)*shortPointer);

gg

Wow thanks. It was staring me in the face but I couldn't see it. I think I have all of the bug now ironed out of this assignment.

Thanks again,
Kairos

P.S. how do I mark topics as answered/completed

[QuantumPete]

P.S. how do I mark topics as answered/completed

This isn't StackOverflow Just don't post again in the topic and it'll disappear after a while...

QuantumPete