采用头插插法和尾插法建立单项链表

PS： 来源2014年数据结构联考复习指导 Page27.

#include <iostream>
#include <stdio.h>
#include <stdlib.h>
using namespace std;
const int END_INPUT = -1;
typedef struct LNode {
    int data;
    struct LNode *next;
}LNode, *LinkList;

LinkList CreatList1(LinkList &L) {
    LinkList s;  //LNode *s;
    int x;
    L = (LNode*)malloc(sizeof(LNode));//L = (LinkList)malloc(sizeof(LNode));
    L -> next = NULL;
    scanf("%d", &x);
    while(x!=END_INPUT) {
        s = (LNode*) malloc(sizeof(LNode));
        s->data = x;
        s->next = L->next;
        L->next = s;
        scanf("%d", &x);
    }
    return L;
}

LinkList CreatList2(LinkList &L) {
    int x;
    L = (LinkList)malloc(sizeof(LNode));
    LNode *s, *r = L;
    scanf("%d", &x);
    while(x != END_INPUT) {
        s = (LinkList)malloc(sizeof(LNode));
        s->data = x;
        r->next = s;
        r = s;
        scanf("%d", &x);
    }
    r->next = NULL;
    return L;
}

void out_put_content(LinkList &L) {
    LinkList p = L;
    while(p->next != NULL) {
        printf("%d->", p->next->data);
        p = p->next;
    }
}

int main()
{
    LinkList head1, head2; //LNode *L;
    CreatList1(head1);
    printf("List1:\n");
    out_put_content(head1);
    printf("\n");
    printf("List2:\n");
    CreatList2(head2);
    out_put_content(head2);
    return 0;
}