頭文件:
#ifndef __SQSTACK_H__
#define __SQSTACK_H__
#include "error.h"
#define TRUE 1
#define FALSE 0
#define SIZE 10
typedef int StackData;
typedef struct _stack
{
StackData data[SIZE]; // 棧數組
int top; // 棧頂元素下標
}Stack;
// 置空棧
int InitStack (Stack *S);
// 判棧是否空棧
int StackEmpty (Stack *S);
// 判棧是否棧滿
int StackFull (Stack *S);
// 進棧
int Push (Stack *S, StackData x);
// 出棧
int Pop (Stack *S, StackData *x);
// 取棧頂
int GetTop (Stack *S, StackData *x);
#endif // __SQSTACK_H__
錯誤信息頭文件:
#ifndef __ERROR_H__
#define __ERROR_H__
#include <stdio.h>
#define ERROR -1
#define FULL_STACK -2
#define EMPTY_STACK -3
int errno; // 錯誤號
void myError(char *str);
char* myStrError(int num);
#endif // __ERROR_H__
錯誤信息函數:
#include "error.h"
void myError(char *str)
{
switch (errno)
{
case ERROR:
printf ("%s: 輸入參數錯誤\n", str);
break;
case FULL_STACK:
printf ("%s: 滿棧狀態\n", str);
break;
case EMPTY_STACK:
printf ("%s: 空棧狀態\n", str);
break;
}
}
char* myStrError(int num)
{
switch (errno)
{
case ERROR:
return "輸入參數錯誤";
case FULL_STACK:
return "滿棧狀態";
case EMPTY_STACK:
return "空棧狀態";
}
}
功能函數:
#include "SqStack.h"
int InitStack (Stack *S)
{
if (S == NULL)
{
errno = ERROR;
return FALSE;
}
S->top = -1;
}
// 空返回真,否則返回假
int StackEmpty (Stack *S)
{
if (S == NULL)
{
errno = ERROR;
return FALSE;
}
return S->top == -1;
}
// 滿返回真,否則返回假
int StackFull (Stack *s)
{
if (s == NULL)
{
errno = ERROR;
return FALSE;
}
return s->top == (SIZE-1);
}
int Push (Stack *s, StackData x)
{
if (s == NULL)
{
errno = ERROR;
return FALSE;
}
// 判斷是否滿棧
if (StackFull(s))
{
errno = FULL_STACK;
return FALSE;
}
/*
s->data[top+1] = x;
s->top++;
*/
s->data[++s->top] = x;
return TRUE;
}
int Pop (Stack *s, StackData *x)
{
if (s == NULL)
{
errno = ERROR;
return FALSE;
}
// 判斷是否空棧
if (StackEmpty(s))
{
errno = EMPTY_STACK;
return FALSE;
}
/*
*x = s->data[s->top];
s->top--;
*/
*x = s->data[s->top--];
return TRUE;
}
int GetTop (Stack *s, StackData *x)
{
if (s == NULL)
{
errno = ERROR;
return FALSE;
}
// 判斷是否空棧
if (StackEmpty(s))
{
errno = EMPTY_STACK;
return FALSE;
}
*x = s->data[s->top];
return TRUE;
}
main函數:
#include <stdio.h>
#include "SqStack.h"
int main()
{
Stack s;
if (InitStack(&s) == FALSE)
{
printf ("初始化失敗\n");
printf ("錯誤號:%d\n", errno);
myError("InitStack");
char * str = myStrError(errno);
printf ("str: %s\n", str);
}
if (StackEmpty(&s))
{
printf ("空棧\n");
}
if (StackFull(&s))
{
printf ("滿棧\n");
}
int x;
if (Pop(&s, &x) != TRUE)
{
myError ("Pop 錯誤");
}
int i;
for (i = 0; i < 10; i++)
{
Push(&s, i);
}
if (Push(&s, 100) != TRUE)
{
myError("壓入第11個元素");
}
char str[100];
for (i = 0; i < 12; i++)
{
if (Pop (&s, &x) != TRUE)
{
sprintf (str, "Pop第%d個元素", i);
myError (str);
}
printf ("x : %d\n", x);
}
return 0;
}