mystack.cpp

参照网上的例子改写的多叉树的读写程序

#include <assert.h>
#include <string.h>
#include "mystack.h"



void init_stack(struct mystack *stk)
{
	stk->ptr = 0;
}

void push_stack(struct mystack *stk, struct tree_node  *data)
{
	assert(stk->ptr < MAXL);
	
	stk->data[stk->ptr] = data;

	//stack->data[stack->ptr++] = data;
	/*strcpy(stk->data[stk->ptr].data,data->data);
	strcpy(stk->data[stk->ptr].value,data->value);
	stk->data[stk->ptr].flag = data->flag;
	stk->data[stk->ptr].firstchild = data->firstchild;
	stk->data[stk->ptr].nextsibling = data->nextsibling;
	*/


	stk->ptr++;
}

struct tree_node  *pop_stack(struct mystack *stk)
{
  assert(stk->ptr > 0);
  return(stk->data[--stk->ptr]);

}

struct tree_node*  topOfstack(struct mystack *stk)
{
  assert(stk->ptr > 0);
  return(stk->data[stk->ptr-1]);
}