请在程序的下划线处填入正确的内容并把下划线删除, 使程序得出正确的结果。
注意:源程序存放在考生文件夹下BLANK1.C中。
不得增行或删行,也不得更改程序的结构!
给定源程序:
#include
#include
#define N 5
typedef struct node {
int data;
struct node *next;
} NODE;
void fun(NODE *h)
{NODE *p, *q, *r;
/**********found**********/
p = h->__1__;
/**********found**********/
if (p==__2__) return;
q = p->next;
p->next = NULL;
while (q)
{r = q->next; q->next = p;
/**********found**********/
p = q; q = __3__;
}
h->next = p;
}
NODE *creatlist(int a[])
{NODE *h,*p,*q; int i;
h = (NODE *)malloc(sizeof(NODE));
h->next = NULL;
for(i=0; i
{q=(NODE *)malloc(sizeof(NODE));
q->data=a[i];
q->next = NULL;
if (h->next == NULL) h->next = p = q;
else {p->next = q; p = q;}
}
return h;
}
void outlist(NODE *h)
{NODE *p;
p = h->next;
if (p==NULL) printf("The list is NULL!\n");
else
{printf("\nHead ");
do
{printf("->%d", p->data); p=p->next;}
while(p!=NULL);
printf("->End\n");
}
}
main()
{NODE *head;
int a[N]={2,4,6,8,10};
head=creatlist(a);
printf("\nThe original list:\n");
outlist(head);
fun(head);
printf("\nThe list after inverting :\n");
outlist(head);
}
解题答案:
/**********第一空**********/
p = h->next;
/**********第二空**********/
if (p==0) return;
/**********第三空**********/
p = q; q = r;
******************************************
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