顺序栈链栈

顺序栈

#include<stdlib.h>
#include<stdio.h>

//顺序栈
#define datatype int
#define MAXSIZE 3
typedef struct {

    datatype data[MAXSIZE];
    int top;

}SeqStack;

int main() {

SeqStack s;
//初始化
s.top = -1;

//入栈：只要有空间则
if (s.top < MAXSIZE - 1) {
int x;
scanf("%d", &x);
s.data[++s.top] = x;
}
else
{
    printf("overflow");
}

//出栈
if (s.top >= 0) {
    printf("%d",s.data[s.top]);
    s.top--;
}
else
{
    printf("empty");
}

getchar();
return 0;
}

链栈

#include<stdlib.h>
#include<stdio.h>

//链栈
typedef struct node {
    int  data;
    struct node * next;

}Node,* LinkList;


int main() {

LinkList top=NULL;
LinkList q=NULL;
int a;
for (int i = 0; i < 3; i++) {
scanf("%d", &a);
q = (LinkList)malloc(sizeof(Node));
q->data = a;
 q->next= top;
 top = q;
}

if (top) {
    LinkList p = top;
    printf("%d", top->data);
    top = top->next;
    free(p);

}

getchar();
system("pause");
//return 0;
}