孤独的猫

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#include<stdio.h>
#include<malloc.h>

typedef char SElemType;

#include "stack.h"
#define EOFILE '&'

int visit(SElemType * e)
{
  printf("%c", *e);
}

void LineEdit()
{
  pSqstack S,T;
  char str[1000];
  int strlen=0;
  char e;
  char ch;

  InitStack(&S);
  InitStack(&T);

  ch=getchar();
  while(ch!=EOFILE)
   {
    while(ch!=EOFILE&&ch!='\n')
     {
       switch(ch){
 case '#':
   Pop(S,&ch);
   break;
 case '@':
   ClearStack(S);
   break;
 default:
   Push(S,ch);
   break;
 }
       ch=getchar();
     }
    if(ch=='\n')
      Push(S,ch);
      while(!StackEmpty(*S))
       {
  Pop(S,&e);
  Push(T,e);
       }
      while(!StackEmpty(*T))
       {
  Pop(T,&e);
  str[strlen++]=e;
       }
    if(ch!=EOFILE) ch=getchar();
  }
  str[strlen]='\0';
  printf("\n%s",str);

  DestroyStack(S);
  DestroyStack(T);
}

main()
{
  printf("\n\n\n\n");
  LineEdit();
  printf("\n\nWelcome to visit http://zmofun.yeah.net !");
  getch();
}

stack.h

#ifndef _STACK_H_
#define _STACK_H_

#define ERROR 0
#define TRUE 1
#define FALSE 0
#define OK 1
#define EQUAL 1
#define OVERFLOW -1
#define STACK_INIT_SIZE 100
#define STACKINCREMENT 10

struct STACK
{
  SElemType *base;
  SElemType *top;
  int stacksize;
};

typedef struct STACK SqStack;
typedef struct STACK *pSqstack;

int InitStack(SqStack **S);
void DestroyStack(SqStack *S);
int ClearStack(SqStack *S);
int StackEmpty(SqStack S);
int StackLength(SqStack S);
int GetTop(SqStack S,SElemType *e);
int Push(SqStack *S,SElemType e);
int Pop(SqStack *S,SElemType *e);
#endif

stack.c

#include "stack.h"
int InitStack(SqStack **S)
{
  (*S)=(SqStack *)malloc(sizeof(SqStack));
  (*S)->base=(SElemType *)malloc(STACK_INIT_SIZE *sizeof(SElemType));
  if(!(*S)->base)exit(OVERFLOW);
  (*S)->top=(*S)->base;
  (*S)->stacksize=STACK_INIT_SIZE;
  return OK;
}

void DestroyStack(SqStack *S)
{
 free(S->base);
 free(S);
}

int ClearStack(SqStack *S)
{
  S->top=S->base;
}

int StackEmpty(SqStack S)
{
  if(S.top==S.base) return TRUE;
  else
    return FALSE;
}

int StackLength(SqStack S)
{
  int i;
  SElemType *p;
  i=0;
  p=S.top;
  while(p!=S.base)
    {p++;
     i++;
    }
}

int GetTop(SqStack S,SElemType *e)
{
  if(S.top==S.base) return ERROR;
  *e=*(S.top-1);
  return OK;
}

int Push(SqStack *S,SElemType e)
{
 /*
  if(S->top - S->base>=S->stacksize)
   {

     S->base=(SElemType *) realloc(S->base,
     (S->stacksize + STACKINCREMENT) * sizeof(SElemType));
     if(!S->base)exit(OVERFLOW);
     S->top=S->base+S->stacksize;
     S->stacksize += STACKINCREMENT;
   }
  */

  *(S->top++)=e;
  return OK;
}

int Pop(SqStack *S,SElemType *e)
{
  if(S->top==S->base) return ERROR;
  *e=*--S->top;
  return OK;
}

posted on 2011-05-03 12:48  孤独的猫  阅读(205)  评论(0编辑  收藏  举报