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題目要求是你輸入a->b->c->d，然后存在內存里，然后改變在內存里的存儲，改成存d->c->b->a，然后輸出還是abcd，能不能就是用一個數組也存一份輸入的，然后用數組修改鏈表里的內容為dcba，然后在倒置鏈表輸出？求幫助修改

#include

#include

#define LEN sizeof(struct fuhao)

struct fuhao

{

char a;

struct fuhao *next;

};

int n;

struct fuhao *creat(void)

{

struct fuhao *head;

struct fuhao *p1,*p2;

n=0;

p1=p2=(struct fuhao *)malloc(sizeof(LEN));

scanf("%c",&p1->a);

head=NULL;

while(p1->a!=NULL)

{

n=n+1;

if(n==1)head=p1;

else p2->next=p1;

p2=p1;

p1=(struct fuhao *)malloc(LEN);

scanf("%c",&p1->a);

}

p2->next=NULL;

return (head);

}

struct fuhao * reverse(struct fuhao *x)

{

struct fuhao *y;

struct fuhao *t;

struct fuhao *r;

if( NULL==x )

return NULL;

t=NULL;

r=NULL, y=x; //(0)

while(y!=NULL)

{

t = y->next; //(1)

y->next = r; //(2)

r = y; //(3)

y = t; //(4)

}

while(r)

{

printf("%c",r);

r=r->next;

}

}

int main()

{

struct fuhao *pt;

pt=creat();

reverse(pt);

}