请看题目，利用malloc()函数如何实现将输入的任意个数字连成一个链表？

Question

想要利用malloc()函数实现将输入的任意个数字连成一个链表,并输出链表中的数字,最后撤销链表

Answer 1

#include <stdio.h>
#include <malloc.h>
struct intnode
{
int num;
intnode *next;
};
intnode *createlist(int n)
{
intnode *p,*head=NULL;
int i;
p=(intnode *)malloc(sizeof(intnode));
scanf("%d",&p->num);
p->next=NULL;
head=p;
for (i=1;i<n;i++)
{
p->next=(intnode *)malloc(sizeof(intnode));
p=p->next;
scanf("%d",&p->num);
}
p->next=NULL;
return head;
}
intnode *sumlist(intnode *a,intnode *b)
{
intnode *pa=a,*pb=b,*p,*head;
p=(intnode *)malloc(sizeof(intnode));
if (a->num<b->num)
{p=a;pa=a->next;}
else
{p=b;pb=b->next;}
p->next=NULL;
head=p;
while(pa!=NULL&&pb!=NULL)
{

if (pa->num<pb->num)
{
p->next=pa;
p=pa;
pa=pa->next;
}
else
{
p->next=pb;
p=pb;
pb=pb->next;
}
}
if(pb==NULL)
while (pa!=NULL)
{p->next=pa;pa=pa->next;}
else
while (pb!=NULL)
{p->next=pb;pb=pb->next;}
return head;
}
void main()
{
int N1,N2;
intnode *p1,*p2,*p;
scanf("%d%d",&N1,&N2);
p1=createlist(N1);
p2=createlist(N2);
p=sumlist(p1,p2);
while (p!=NULL)
{
printf("%d ",p->num);
p=p->next;
}
printf("\n");
}