RE: [Dev-C++] Bugs: Unallocated Memory

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

> -----Original Message-----
> From: dev...@li... 
> [mailto:dev...@li...] On Behalf 
> Of Nurhidayat
> Sent: Thursday, September 20, 2001 7:06 AM
> To: dev...@li...
> Subject: [Dev-C++] Bugs: Unallocated Memory
> 
> 
> I've found bugs(?) when trying to code linked list record. 
> Compiler cannot allocated base type variable within 
> structure, but array of char work fine. 
> 
> Here is I simplified code:
> 
> #include <stdlib.h>
> #include <stdio.h>
> 
> struct mystruct {
>   char name[8];
>   int age;
> };
> 
> int main()
> {
>   mystruct *ptr;	    //test dynamic allocation
>   int *page;             
>   ptr  = new mystruct;   //compiler must allocate memory
>   page = new int;
>       
>   printf("Address of name : %p\n", ptr->name);  //allocated
>   printf("Address of age  : %p\n", ptr->age);   //give us 
> null pointer, why?
>   printf("Address of page : %p\n", page);       //allocated 
> (for comparison)

These 3 give to me:

Address of name : 025D2440
Address of age  : 72676F72
Address of page : 025D2470

But, this is not the address of age. Address of age is 

printf("Address of age  : %p\n", &ptr->age);




> 
>   //so ...
>   printf("Enter name:"); scanf("%s", ptr->name); //success
>   printf("Enter age :"); scanf("%s", ptr->age);  //raised error!!!

The correct is scanf("%d", &ptr->age); 

       
>   delete ptr;
>   delete page;
>   system("PAUSE");
>   return 0;
> }
> 
> ___Nurhidayat___


Ioannis

* Ioannis Vranos
* Programming pages: http://www.noicys.f2s.com
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