Here's a long-ish shot..........check it out: (C HELP)

[MAME]

I'm parsing the command line and part of the specs is that after a '-s', there should be a number specifying the start byte (doesn't matter what it's for...only that I'm supposed to get a # afterwards).

so I got this:

int main(int argc, char *argv[])
.
.
for(i = 1; i < argc; i++)
.
.
if(strcmp(argv, "-s") == 0)
{
i++;
if(isdigit( (int) argv) ) <-------- PROBLEM
start = (int)argv;
else
{
printf("\n\nIllegal arguments, exiting now\n\n");
exit(1);
}
}

I tried to convert the input to an int but that's no good because it converts and char in to an int which is then saved as my start bit. So the letter 'd' would be whatever the ascii code is (I think) as opposed to printing the error message and qutting.

So I guess isdigit isn't the best function, anyone have ideas about this??

 

[MichaelD]

Engrish?

 

[Heisenberg]

Originally posted by: MichaelD
Engrish?

MAME is coding on a Friday night instead of drinking heavily and having one night stands like normal, healthy college kids should.

 

[ThisIsMatt]

Check the next arg one char at a time.

 

[MichaelD]

Originally posted by: Heisenberg

Originally posted by: MichaelD
Engrish?

MAME is coding on a Friday night instead of drinking heavily and having one night stands like normal, healthy college kids should.

Ah...Now I get it. See, after I saw this:

I'm parsing the command line and...

I should've just realized THAT was the problem right there....nobody should be "parsing a command line" on a Friday night!

You need to find you a honey, MAME and tell her:

Parse THIS, baby...it's my BoomStick!

 

[MAME]

damnit, it won't format correctly! wtf is this?!

 

[MAME]

Originally posted by: MichaelD

Originally posted by: Heisenberg

Originally posted by: MichaelD
Engrish?

MAME is coding on a Friday night instead of drinking heavily and having one night stands like normal, healthy college kids should.

Ah...Now I get it. See, after I saw this:

I'm parsing the command line and...

I should've just realized THAT was the problem right there....nobody should be "parsing a command line" on a Friday night!

You need to find you a honey, MAME and tell her:

Parse THIS, baby...it's my BoomStick!

hahaha, rock on. My gf is in japan so no sex for me

 

[MAME]

Originally posted by: ThisIsMatt
Check the next arg one char at a time.

ohhh, hmm...I might be able to do that. How do I see the next char? argv[ 0-length of argv ]...?

 

[ThisIsMatt]

Look, I have the solution sitting right in front of me...do what I said

 

[ThisIsMatt]

Originally posted by: MAME

Originally posted by: ThisIsMatt
Check the next arg one char at a time.

ohhh, hmm...I might be able to do that. How do I see the next char? argv[ 0-length of argv ]...?

Once you determine if the argument -s is there, advance to the next arg. Loop around the arg until you reach the null termination, checking each char with isdigit. You'd loop on something like arg[2][ i] where i runs from 0 to '\0'

 

[MAME]

Originally posted by: MAME

Originally posted by: ThisIsMatt
Check the next arg one char at a time.

ohhh, hmm...I might be able to do that. How do I see the next char? argv[ 0-length of argv ]...?

JESUS CHRIST, posting code here is impossible!

that SHOULD read:
argv [ 0 - length of argv(i) ]

(replace the (,)'s with [,]'s)

 

[MAME]

Originally posted by: ThisIsMatt

Originally posted by: MAME

Originally posted by: ThisIsMatt
Check the next arg one char at a time.

ohhh, hmm...I might be able to do that. How do I see the next char? argv[ 0-length of argv ]...?

Once you determine if the argument -s is there, advance to the next arg. Loop around the arg until you reach the null termination, checking each char with isdigit. You'd loop on something like arg[2] where i runs from 0 to '\0'

yeah, that's what I was trying to convey on that last post, but fusetalk doesn't like code

 

[ThisIsMatt]

go to irc

 

[ThisIsMatt]

or aim

postcount++

 

[Chu]

Originally posted by: ThisIsMatt
or aim

postcount++

This code should help your out. This assumes there is only one arg after -s, but you can probably easily extend it.

#include <errno.h>

int tmp;
extern int errno;

int main(int argc, char** argv){

if (!strcmp(argv[1], "-s")){

tmp = atoi(argv[2]);
if (tmp == 0){
if (errno == ERANGE)
printf("The value is out of range\n");
else if (errno = EINVAL){
printf("That isn't a number dumbass\n");
}
}
}

/* if strcmp failed, check error codes here */

printf("%d\n",tmp);
}


If you have any questions, reply. If your wondering how I knew the error codes for atoi, remember, man pages are your friend!.

-Chu

 

[MAME]

thanks chu but I got it already (thanks to matt and ameesh). NOTE: the code I posted was NOT the code that I meant to post. [ i ] makes it go to itallics so a lot of my code is missing and I look like an idiot when I'm actually only a semi-moron!

thanks though