#include<stdio.h>
typedef int ElemType;
typedef int STATUS;
#define STACKSIZE 5
#define OK 1
#define ERROR 0
typedef struct
{
int top;
int data[STACKSIZE];
}Stack;
//堆栈初始化
void StackInit(Stack *S)
{
S->top=0;
}
//堆栈长度计算
STATUS StackLength(Stack *S)
{
return S->top;
}
//堆栈压入
STATUS PushStack(Stack *S,ElemType e)
{
if(S->top==STACKSIZE)
return ERROR;
S->data[S->top]=e;
S->top++;
return OK;
}
//堆栈弹出
int PopStack(Stack *S,ElemType *e)
{
if(S->top==0)
return ERROR;
S->top--;
*e=S->data[S->top];
return OK;
}
int main()
{
Stack stack;
int value,flag=0,i;
StackInit(&stack);
printf("length=%d\n",StackLength(&stack));
for(i=0;i<=5;i++)
{
flag=PushStack(&stack,i);
printf("flag=%d length=%d\n",flag,StackLength(&stack));
}
for(i=0;i<=5;i++)
{
flag=PopStack(&stack,&value);
printf("flag=%d value=%d length=%d\n",flag,value,StackLength(&stack));
}
return 0;
}
运行效果图如下: