Hi,
I have a structure
MAX_ID is 5
/**Structure for Copies*/
typedef struct NodeVideoCopy * NodeVideoCopyPtr ;
typedef struct NodeVideoCopy
{
char CopyID[MAX_ID];
char type;
char status;
NodeVideoCopyPtr next;
}NodeVideoCopy;
/**Structure for Videos*/
typedef struct NodeVideo * NodeVideoPtr;
typedef struct NodeVideo
{
char * videoname;
char VideoID[MAX_ID];
int Release;
char * director;
unsigned int NoOfCopies;
NodeVideoCopyPtr copies;
NodeVideoPtr next;
}NodeVideo;
/*Display Videos*/
void DisplayVideos(Library * Lib)
{
NodeVideoPtr current;
NodeVideoCopyPtr copy;
current = Lib->VideoList;
while(current!=NULL)
{
printf("\nVideo Name :%s",current->videoname);
copy = current->copies;
printf("\nCopies are :\n");
while(copy!=NULL)
{
printf("\nCopy ID :%s",copy->CopyID); /*Prinitng copies of Video*/
printf("\tCopy type :%c",copy->type);
printf("\tCopy Status :%c",copy->status);
copy = copy->next;
}
current = current->next;
}
}
Now when i am printing copies of a Video
its printing CopyID+type+status together.
Why is this behaviour??
Output is like
Video Name :Jurassic Par‼
Copies are :
Copy ID :C1012SA Copy type :S Copy Status :A
Copy ID :C1013SU Copy type :S Copy Status :U
Video Name :Sholay
Copies are :
Copy ID :C0001SU Copy type :S Copy Status :U
Video Name :CockTail
Copies are :
Copy ID :C0005RU Copy type :R Copy Status :U
Copy ID :C0003RU Copy type :R Copy Status :U
Can't Underatsnd why is it going beyond the alloctaed memory i.e. 5 to
it.
8  1806 
>Copy ID :C1012SA Copy type :S Copy Status :A Copy ID :C1013SU Copy type :S Copy Status :U
I forgot to mention that Copy Id is actually C1012 i.e( 5 in length)
but its also printing its copy type and status along with it.
So its printing C1012SA instead of C1012 and why is it able to do that
if i have declared
CopyID[MAX_ID] with MAX_ID as 5 ma***********@gmail.com wrote: Hi,
I have a structure
MAX_ID is 5
/**Structure for Copies*/
typedef struct NodeVideoCopy * NodeVideoCopyPtr ;
typedef struct NodeVideoCopy
{
char CopyID[MAX_ID];
char type;
char status;
NodeVideoCopyPtr next;
}NodeVideoCopy;
/**Structure for Videos*/
typedef struct NodeVideo * NodeVideoPtr;
typedef struct NodeVideo
{
char * videoname;
char VideoID[MAX_ID];
int Release;
char * director;
unsigned int NoOfCopies;
NodeVideoCopyPtr copies;
NodeVideoPtr next;
}NodeVideo;
/*Display Videos*/
void DisplayVideos(Library * Lib)
{
NodeVideoPtr current;
NodeVideoCopyPtr copy;
current = Lib->VideoList;
while(current!=NULL)
{
printf("\nVideo Name :%s",current->videoname);
copy = current->copies;
printf("\nCopies are :\n");
while(copy!=NULL)
{
printf("\nCopy ID :%s",copy->CopyID); /*Prinitng copies of Video*/
printf("\tCopy type :%c",copy->type);
printf("\tCopy Status :%c",copy->status);
copy = copy->next;
}
current = current->next;
}
}
Now when i am printing copies of a Video
its printing CopyID+type+status together.
Why is this behaviour??
Output is like
Video Name :Jurassic Par?
Copies are :
Copy ID :C1012SA Copy type :S Copy Status :A
Copy ID :C1013SU Copy type :S Copy Status :U
Video Name :Sholay
Copies are :
Copy ID :C0001SU Copy type :S Copy Status :U
Video Name :CockTail
Copies are :
Copy ID :C0005RU Copy type :R Copy Status :U
Copy ID :C0003RU Copy type :R Copy Status :U
Can't Underatsnd why is it going beyond the alloctaed memory i.e. 5 to
it.
The output - as far as I can tell - seems to be consistent with:
printf("\nCopy ID :%s",copy->CopyID); /Prinitng copies of Video/
printf("\tCopy type :%c",copy->type);
printf("\tCopy Status :%c",copy->status);
Can't Underatsnd why is it going beyond the alloctaed memory i.e. 5 to
it.
???
--
==============
Not a pedant
==============
>The output - as far as I can tell - seems to be consistent with: printf("\nCopy ID :%s",copy->CopyID); /Prinitng copies of Video/
printf("\tCopy type :%c",copy->type);
printf("\tCopy Status :%c",copy->status);
Please Read the second post of mine
I missed some detail
Sorry!! ma***********@gmail.com wrote: Copy ID :C1012SA Copy type :S Copy Status :A
Copy ID :C1013SU Copy type :S Copy Status :U
I forgot to mention that Copy Id is actually C1012 i.e( 5 in length)
but its also printing its copy type and status along with it.
So its printing C1012SA instead of C1012 and why is it able to do that
if i have declared
CopyID[MAX_ID] with MAX_ID as 5
You've no space for a '\0' terminator then!
And, as structure members appear in memory [ok, maybe with some padding!] in
the order in which they appear in the struct, you're output is *now*
understandable ... and you're lucky/unlucky that a terminator *is* being
found - perhaps *because* of padding being added.
--
==============
Not a pedant
==============
>You've no space for a '\0' terminator then! And, as structure members appear in memory [ok, maybe with some padding!] in
the order in which they appear in the struct, you're output is *now*
understandable ... and you're lucky/unlucky that a terminator *is* being
found - perhaps *because* of padding being added.
Thanx got it solved. Didn't came to my mind that i am missing NULL
character.
As the array length was full it didnt copied from strcpy().
Hope i am correct in this.
Thanx again ma***********@gmail.com wrote: You've no space for a '\0' terminator then!
And, as structure members appear in memory [ok, maybe with some
padding!] in the order in which they appear in the struct, you're
output is *now* understandable ... and you're lucky/unlucky that a
terminator *is* being found - perhaps *because* of padding being
added.
Thanx got it solved. Didn't came to my mind that i am missing NULL
character.
As the array length was full it didnt copied from strcpy().
Hope i am correct in this.
Thanx again
strcpy copies the null terminator across - so, as long as you've increased
MAX_ID you should be ok.
--
==============
Not a pedant
==============
<ma***********@gmail.com> wrote in message
news:11**********************@v46g2000cwv.googlegr oups.com... Thanx got it solved. Didn't came to my mind that i am missing NULL
character.
You were missing an ASCII NUL, not a NULL. The first is a character with
value zero, the second is a pointer constant.
RP
"Rod Pemberton" <do*********@sorry.bitbuck.cmm> writes: <ma***********@gmail.com> wrote in message
news:11**********************@v46g2000cwv.googlegr oups.com... Thanx got it solved. Didn't came to my mind that i am missing NULL
character.
You were missing an ASCII NUL, not a NULL. The first is a character with
value zero, the second is a pointer constant.
Well, since there's no guarantee of ASCII, we really want the null
character (which coincides with ASCII's NUL). This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics
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