有以下程序
#include <stdlib.h>
Struct NODE{
Int num;
Struct NODE *next;
};
Main()
{ struct NODE *p,*q,*r;
Int sum=0;
P=(struct NODE *)malloc(sizeof(struct NODE));
Q=(struct NODE *)malloc(sizeof(struct NODE));
R=(struct NODE *)malloc(sizeof(struct NODE));
P->num=1;q->num=2;r->num=3;
P->next=q;q->next=r;r->next=NULL;
Sum+=q->next->num;sum+=p->num;
Printf("%d\n",sum);
}
执行后输出结果是______。
A.3 B.4 C.5 D.6正确答案B
