核心代码

struct Test* insertFromBehind(struct Test* phead,struct Test* new)
{
	struct Test* p=phead;
	
	if(phead==NULL)
	{
		phead=new;
		
		return phead
	}
	
	while(p->next!=NULL)
	{
		p=p->next;
	}
	p->next=new;
	
	return phead;
}

struct Test* createLink2(struct Test* phead)
{
	struct Test* new=NULL;
	
	printf("Please input total node number:\n");
	int i=0;
	scanf("%d",&i);
	
	while(1)
	{
		if(i!=0)
		{
			new=(struct Test*)malloc(sizeof(struct Test));
			printf("Please input node:\n");
			scan("%d",&(new->data));
		}
		
		if(i==0)
		{
			printf("qiut!\n");
			
			return phead;
		}
		i--;
		phead=insertFromBehind(phead,new);

	}
}

示例

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

struct Test
{
	int data;
	
	struct Test* next;
};

void printLink(struct Test* phead)
{

	struct Test* point=phead;
	
	while(point!=NULL)
	{
		printf("%d ",point->data);
		point=point->next;
	}
	putchar('\n');

/*	
	while(1)
	{
		if(phead!=NULL)
		{
			printf("%d ",phead->data);
			phead=phead->next;
		}
		else
		{
			putchar('\n');
			break;
		}
	}
	
*/
}

struct Test *insertFromHead(struct Test* phead,struct Test* new)
{
	if(phead==NULL)
	{
		phead=new;
		return phead;
	}
	else
	{
		new->next=phead;
		phead=new;
		return phead;
	}
}

struct Test* createLink(struct Test* phead)
{
	struct Test* new=NULL;

	printf("Please input node:\n");
	int i=0;
	scanf("%d",&i);
	
	while(1)
	{	
		if(i!=0)
		{
			new=(struct Test*)malloc(sizeof(struct Test));
			printf("Please input Node:\n");
			scanf("%d",&(new->data));
		}
		
		if(i==0)
		{
			printf("quit!\n");
			
			return phead;
		}
		i--;
		phead=insertFromHead(phead,new);
	}
}

struct Test* insertFromBehind(struct Test* phead,struct Test* new)
{
	struct Test* p=phead;

	if(p==NULL)
	{
		phead=new;

		return phead;
	}

	while(p->next!=NULL)
	{
		p=p->next;
	}
	p->next=new;

	return phead;
}

struct Test* createLink2(struct Test* phead)
{
	struct Test* new=NULL;
	printf("Please input total node number:\n");
	int i=0;
	scanf("%d",&i);

	while(1)
	{
		if(i!=0)
		{
			new=(struct Test*)malloc(sizeof(struct Test));
			printf("Please input node:\n");
			scanf("%d",&(new->data));
		}

		if(i==0)
		{
			printf("quit!\n");

			return phead;
		}
		i--;
		phead=insertFromBehind(phead,new);
	}
}

int main()
{
	struct Test* head=NULL;

	head=createLink2(head);

	struct Test t1={100,NULL};

	head=insertFromHead(head,&t1);

	printLink(head);

	struct Test t2={200,NULL};

	head=insertFromBehind(head,&t2);

	printLink(head);
	
	return 0;
}