error in a function.needs help

[meetharry19]

i m trying to make a function which will calculate size of each node of an ordered statistic tree . here size refers to the number of nodes in left sub tree and right sub tree plus one...
but whenever i call this function compiler gives error....and program terminates at line:

if(ptr->lc==NULL && ptr->rc==NULL)

size(struct node *ptr)
{
    if(root==NULL)
    {
 
        return 0;
    }
  if(ptr->lc==NULL && ptr->rc==NULL)
      ptr->size=1;
    if(ptr!=NULL)
    ptr->size=(size(ptr->lc) + size(ptr->rc)+1);
 
     }
 

plz help out by advising me

[Banfa]

Please use the [code]...[/code] tags provided.

What compiler error do you get?

What do you think this function does it it is called with a NULL pointer?

[meetharry19]

Please use the

...

tags provided.

What compiler error do you get?

What do you think this function does it it is called with a NULL pointer?

for your convenience ,to understand wat actually is done...i m putting the whole program :

<snipped>
 

and the error is general protection exception and line :if(ptr->lc==NULL && ptr->rc==NULL) i.e. line no 68..
is highlighted...i want to know what is wrong....

[Banfa]

and the error is general protection exception and line :if(ptr->lc==NULL && ptr->rc==NULL) i.e. line no 68..
is highlighted...i want to know what is wrong....

I have removed you code because a) it is against our posting guideline to post the full code solution to what may be a coursework problem and b) it is not required your original snippet contains all that is required to diagnose the problem.

A "general protection exception" is not a compiler error it is a runtime error, getting the terminology right will help in getting your problem fixed.

And I ask you again what do you think is happening in your function when it is called with a NULL pointer, i.e. when ptr == NULL? If it isn't obvious to you then I suggest you step through each line of code in the function on paper executing it as your processor would.

[SpecialKay]

No its not dude,
I believe the rules say, when you are asking a question it is alright to post entire code. The rules are asking the experts not to post entire code solutions, and that makes sence.

edit:
Sorry guess the rule was changed again. My bad... dont agree with it tho, if you are asking a question, should be aloud to post full code. anyways.

[meetharry19]

No its not dude,
I believe the rules say, when you are asking a question it is alright to post entire code. The rules are asking the experts not to post entire code solutions, and that makes sence.

edit:
Sorry guess the rule was changed again. My bad... dont agree with it tho, if you are asking a question, should be aloud to post full code. anyways.

thank you for your valuable suggestions
thanks for your valuable suggestions .....banfa

[Banfa]

edit:
Sorry guess the rule was changed again. My bad... dont agree with it tho, if you are asking a question, should be aloud to post full code.

Nope they have been that way since about this time last year, I should know I wrote them :D

It's like that for the protection of the poster as much as anything else.