Thread: Array of struct

right what is this

Code:

(*stackptr) = peek_element->next;

your structure don't seem to have a data member li9ke next. i hope u aree trying to do something like linked list struct. id you want to include your next as a member to your structure this how u do it

Code:

struct store{
	int data_int;
	char data_char;
	int num;
                struct store *next;
};

as u dont have a link between the array elemets u cant access any of your data. can i look at your main fucntion please

ssharish

i dont understand what are u doing here. it seems to to be meaning less. how do u travel through the stack if u dont have a link to next element. your struture looks like it dont have any link to next record

Code:

struct store{
	int data_int;
	char data_char;
	int num;
};

are u using any array here if so can u post here

ssharish2005

I have a stack.c and a stack.h file that I include with my test.c file.

stack.h file contains the structure

Code:

struct element{
	int data_int;
	char data_char;
	struct element* next;
}
stack_t;

My stack works correctly....within the for loop I have created in my function, it travels through the stack looking at each element.

I then use this structure to return these values....

Code:

struct store{
	int data_int;
	char data_char;
};

Are you saying that I should just return the structure 'struct element' instead?

i dont see any array declaration or stack pointer either in your main. right listen how do u manupalate on stack u need a stack pointer which points to the top of the stack. i dont see a stack pointer.

ssharish2005

Originally Posted by zonf

I have a stack.c and a stack.h file that I include with my test.c file.

stack.h file contains the structure

Code:

struct element{
	int data_int;
	char data_char;
	struct element* next;
}
stack_t;

My stack works correctly....within the for loop I have created in my function, it travels through the stack looking at each element.

I then use this structure to return these values....

Code:

struct store{
	int data_int;
	char data_char;
};

Are you saying that I should just return the structure 'struct element' instead?

right if this is the case

Code:

for ( i=0; i < size; i++)					

	{

		peek_element = (*stackptr);       				

      		peeking.data_int = peek_element->data_int;
		peeking.data_char = peek_element->data_char; 	    			
		(*stackptr) = peek_element->next;
								

	}
	return peeking;	//Returns  value at top of stack

so in the main u will have to recive the peeking. so it should me like this

Code:

strut store temp;

temp=(&stackpointer,size);

printf("%d",temp.data_int);
printf("%c",temp.data_char);

ssahrish2005

I'm not using a pointer to point to the top of the stack...do I need to?

If I enter in

1 2 3 4 a b c d

and use the following code

Code:

struct store{
	int data_int;
	char data_char;
	int num;
} test2;

...

 test2 = peek(&stack,3);

The output would be:

Peeking at stack:: 2b

This means my stack is working....



If however I use this array:

(sorry, the array definition didn't get copied when I last posted...am really tired, so please bear with me as best you can, sorry for being a pain)

Code:

struct store{
	int data_int;
	char data_char;
	int num;
} test[4];

...
for (i=0, i<4; i++)
{
     test[i] = peek(&stack,i);
}

I get a sgementation fault....

Code:

#include<stdio.h>

#include"stack.h"

struct store{
	int data_int;
	char data_char;
};

stack_t* stack;  		
int stack_size;
....

Yes you are exactly right in your post above....It doesn't work when I try and recieve it into an array though...

Post your latest code - a main() and enough functions to show your segfault.