dev-cpp-users

[Dev-C++] how do you pass strings in pointers?

[Calvin M. <cm...@pg...>]

I am trying to pass a adjusted string pointer back to original function and
I am not able to read it, I am able to send it ok, and I can manipulate it
fine !!! the problem is when I try to work with it after it has been
changed(back in the original function) it looks as if their is nothing
their?

the code is below


#include <stdio.h>
#include <string.h>
#include <stdlib.h>

void token(char *,char *,char *);

int main()
{
char s_phone[18],*area,*number;
double dnumber;
int darea;

token(s_phone,area,number);
//puts(area);
//dnumber = atol(number);  // converts string to long
//darea = atoi(area);  // converts string to int

return 0;
}


/****************************************************************
 *    Function to token out the parts of the phone number      **
 ***************************************************************/

 void token(char *phoneptr,char *areaptr,char *numberptr)
{
}

RE: [Dev-C++] how do you pass strings in pointers?

[Ioannis V. <no...@ya...>]

You have not allocated any memory space and assign it to the  pointers.
Hint: Read about malloc() or calloc() and free().

> -----Original Message-----
> From: dev...@li...
> [mailto:dev...@li...]On Behalf Of
> Calvin Mills
> Sent: Monday, January 15, 2001 7:25 AM
> To: Dev-Cpp-Users
> Subject: [Dev-C++] how do you pass strings in pointers?
>
>
> I am trying to pass a adjusted string pointer back to original
> function and
> I am not able to read it, I am able to send it ok, and I can manipulate it
> fine !!! the problem is when I try to work with it after it has been
> changed(back in the original function) it looks as if their is nothing
> their?
>
> the code is below
>
>
> #include <stdio.h>
> #include <string.h>
> #include <stdlib.h>
>
> void token(char *,char *,char *);
>
> int main()
> {
> char s_phone[18],*area,*number;
> double dnumber;
> int darea;
>
> token(s_phone,area,number);
> //puts(area);
> //dnumber = atol(number);  // converts string to long
> //darea = atoi(area);  // converts string to int
>
> return 0;
> }
>
>
> /****************************************************************
>  *    Function to token out the parts of the phone number      **
>  ***************************************************************/
>
>  void token(char *phoneptr,char *areaptr,char *numberptr)
> {
> }
>
>
>
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