help with sscanf()! Post: 302308257

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Top Forums Programming help with sscanf()! Post 302308257 by Zykl0n-B on Friday 17th of April 2009 01:28:28 PM

04-17-2009

Zykl0n-B

Guest

help with sscanf()!

Hi everybody,

i need help with this function, i'm programming in CGI with C and i can't make this work.

QUERY_STRING is something like: user=MYUSER&pass=MYPASS

So, what i want is to store the strings containing the username and the password into str1 and str2 respetively, here's the code:

Code:

#include <stdio.h>
#include <stdlib.h>
 
int main(void){
char *data, *str1, *str2;
 
/*... HTML stuff ...*/
 
data = getenv("QUERY_STRING");
 
if(data==NULL){
printf("<H1>Error passing data to CGI Script</H1>");
exit(1);
}
 
else
sscanf(data, "user=%s&pass=%s", &str1, &str2);
 
printf("Username: %s\n", str1);
printf("Password: %s\n", str2);
return(0);
}

But i'm getting an error... it works perfectly with numbers, but i need it to work like this, with strings.
Am i missing something? Please, help me!!!

Last edited by Zykl0n-B; 04-17-2009 at 02:33 PM..

Zykl0n-B

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streqvcmp

streqvcmp(3)							Programmer's Manual						      streqvcmp(3)

NAME

       streqvcmp - compare two strings with an equivalence mapping

SYNOPSIS

       #include <your-opts.h>
       cc [...] -o outfile infile.c -lopts [...]

       int streqvcmp(char const* str1, char const* str2);

DESCRIPTION

       Using  a  character  mapping, two strings are compared for "equivalence".  Each input character is mapped to a comparison character and the
       mapped-to characters are compared for the two NUL terminated input strings.  This function name is mapped to option_streqvcmp so as to  not
       conflict with the POSIX name space.

       str1   first string

       str2   second string

RETURN VALUE

       the difference between two differing characters

ERRORS

       none checked.  Caller responsible for seg faults.

SEE ALSO

       The info documentation for the -lopts library.
       ao_string_tokenize(3),  configFileLoad(3), optionFileLoad(3), optionFindNextValue(3), optionFindValue(3), optionFree(3), optionGetValue(3),
       optionLoadLine(3),  optionNextValue(3),	optionOnlyUsage(3),  optionProcess(3),	optionRestore(3),  optionSaveFile(3),  optionSaveState(3),
       optionUnloadNested(3), optionVersion(3), pathfind(3), strequate(3), streqvmap(3), strneqvcmp(3), strtransform(3),

								    2010-07-05							      streqvcmp(3)