#include<malloc.h>
#include<stdio.h>
int main()
{
#define OK 1
#define ERROR 0
#define STACK_INIT_SIZE 100
#define STACKINCREMENT 10
typedef int SElemType;
typedef int Status;
struct SqStack
{
SElemType *base;
SElemType *top;
int stacksize;
};
Status InitStack(SqStack (&S))
{
S.base=(SElemType*)malloc(STACK_INIT_SIZE*sizeof(SElemType));
S.top=S.base;
S.stacksize=STACK_INIT_SIZE;
return OK;
}
Status 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)return ERROR;
S.stacksize+=STACKINCREMENT;
}
*S.top++=e;
return OK;
}
Status Pop(SqStack &S,SElemType &e)
{
if(S.base==S.top)return ERROR;
e=*--S.top;
return OK;
}
Status GetTop(SqStack S,SElemType &e)
{
if(S.base==S.top)return ERROR;
e=*(S.top-1);
return OK;
}
int StackLength(SqStack S)
{
int a;
a=S.top-S.base;
return a;
}
Status StackTraverse(SqStack S)
{
SElemType *p = (SElemType *)malloc(sizeof(SElemType));
SElemType *q = (SElemType *)malloc(sizeof(SElemType));
p =S.top;
q = S.base;
if(p==q)printf("The Stack is Empty!");
else
{
printf("The Stack is: ");
p--;
while(p>=S.base)
{
printf("%d ", *p);
p--;
}
}
printf("\n");
return OK;
}
int a;
SqStack S;
SElemType x, e;
if(InitStack(S))
{
printf("A Stack Has Created.\n");
}
while(1)
{
printf("1:Push \n2:Pop \n3:Get the Top \n4:Return the Length of the Stack\n5:Load the Stack\n0:Exit\nPlease choose:\n");
scanf("%d",&a);
switch(a)
{
case 1: scanf("%d", &x);
if(!(Push(S,x))) printf("Push Error!\n");
else printf("The Element %d is Successfully Pushed!\n", x);
break;
case 2: if(!(Pop(S,e))) printf("Pop Error!\n");
else printf("The Element %d is Successfully Poped!\n", e);
break;
case 3: if(!(GetTop(S,e)))printf("Get Top Error!\n");
else printf("The Top Element is %d!\n", e);
break;
case 4: printf("The Length of the Stack is %d!\n",StackLength(S));
break;
case 5: StackTraverse(S);
break;
case 0: return 1;
}
}
}