无人机飞行误差:C语言程序改错
以下是我写的程序:
#include
#include
#define NULL 0
#define LEN sizeof(struct student)
struct student
{long num;
float score;
struct student * next;
};
int n;
struct student * creat(void)
{struct student * head,* p1,*p2;
n=0;
p1=p2=(struct student *)malloc(LEN);
scanf("%ld,%f",&p1->num,&p1->score);
head=NULL;
while(p1->num!=0)
{n=n+1;
if(n==1)head=p1;
else p2->next=p1;
p2=p1;
p1=(struct student * )malloc(LEN);
scanf("%ld,%f",&p1->num,&p1->score);
}
p2->next=NULL;
return(head);
}
void print(struct student * head)
{struct student * p;
printf("\nNow,These %d records are:\n",n);
p=head;
if(head!=NULL)
do
{printf("%ld,%5.1f\n",p->num,p->score);
p=p->next;
}while(p!=NULL);
}
struct student * del(struct student * head,long num)
{struct student * p1,* p2;
if(head==NULL){printf("\nList null!!\n"); }
p1=head;
while(num!=p1->num && p1->next!=NULL)
{p2=p1;p1=p1->next;
}
if(num==p1->num)
{if(p1==head) head=p1->next;
else p2->next=p1->next;
printf("delete:%ld\n",num);
n=n-1;
}
else printf("%ld not been found!!\n",num);
return(head);
}
struct student * insert(struct student * head,struct student * stud)
{struct student * p0,* p1,* p2;
p1=head;
p0=stud;
if(head==NULL)
{head=p0;p0->next=NULL;}
else
{while((p0->num>p1->num)&&(p1->next!=NULL))
{p2=p1;
p1=p1->next;
}
if(p0->num num)
{if(head==p1) head=p0;
else p2->next=p0;
p0->next=p1;
}
else{p1->next=p0;p0->next=NULL;}
}
n=n+1;
return(head);
}
main()
{struct student * head,* stu;
long del_num;
printf("input records: \n");
head=creat();
print(head);
printf("\ninput the deleted number:");
scanf("%ld",&del_num);
while(del_num!=0)
{head=del(head,del_num);
print(head);
printf("input the deleted number:");
scanf("%ld",&del_num);
}
printf("\ninput the inserted record:");
stu=(struct student *)malloc(LEN);
scanf("%ld,%f",&stu->num,&stu->score);
while(stu->num!=0)
{head=insert(head,stu);
print(head);
printf("input the inserted record:");
stu=(struct student * )malloc(LEN);
scanf("%ld,%f",&stu->num,&stu->score);
}
}
在tc上运行还是有错误,但我又检查不出来了。不知哪位高人可以指点一下。谢谢了!!!
scanf("\n%ld,%f",&(p1->num),&(p1->score));
将所有的scanf修改,如上,可能部分\n需加在后面
以下程序在VC++ 6.0 中控制台下编译运行通过。
另:你是一个好学生,不像有些人,就等着代码,那样往往等不到,至少我不会帮他
#include <stdio.h>
#include <stdlib.h>
#define LEN sizeof(struct student)
struct student
{
long num;
float score;
struct student * next;
};
int n;
struct student * creat(void)
{
struct student * head,* p1,*p2;
n=0;
p1=p2=(struct student *)malloc(LEN);
printf("input ID,Score\n");
scanf("\n%ld,%f",&(p1->num),&(p1->score));
head=NULL;
while(p1->num!=0)
{
n=n+1;
if(n==1)head=p1;
else p2->next=p1;
p2=p1;
p1=(struct student * )malloc(LEN);
printf("input ID,Score\n");
scanf("\n%ld,%f",&(p1->num),&(p1->score));
}
p2->next=NULL;
return(head);
}
void print(struct student * head)
{
struct student * p;
printf("\nNow,These %d records are:\n",n);
p=head;
if(head!=NULL)
do
{
printf("%ld,%5.1f\n",p->num,p->score);
p=p->next;
}while(p!=NULL);
}
struct student * del(struct student * head,long num)
{
struct student * p1,* p2;
if(head==NULL)
{
printf("\nList null!!\n");
}
p1=head;
while(num!=p1->num && p1->next!=NULL)
{
p2=p1;p1=p1->next;
}
if(num==p1->num)
{
if(p1==head) head=p1->next;
else p2->next=p1->next;
printf("delete:%ld\n",num);
n=n-1;
}
else printf("%ld not been found!!\n",num);
return(head);
}
struct student * insert(struct student * head,struct student * stud)
{
struct student * p0,* p1,* p2;
p1=head;
p0=stud;
if(head==NULL)
{
head=p0;p0->next=NULL;
}
else
{
while((p0->num>p1->num)&&(p1->next!=NULL))
{
p2=p1;
p1=p1->next;
}
if(p0->num)
{
if(head==p1) head=p0;
else p2->next=p0;
p0->next=p1;
}
else{p1->next=p0;p0->next=NULL;}
}
n=n+1;
return(head);
}
main()
{
struct student * head,* stu;
long del_num;
printf("input records: \n");
head=creat();
print(head);
printf("\ninput the deleted number:");
scanf("\n%ld",&del_num);
while(del_num!=0)
{
head=del(head,del_num);
print(head);
printf("input the deleted number:");
scanf("\n%ld",&del_num);
}
printf("\ninput the inserted record:");
stu=(struct student *)malloc(LEN);
scanf("\n%ld,%f",&stu->num,&stu->score);
while(stu->num!=0)
{
head=insert(head,stu);
print(head);
printf("input the inserted record:");
stu=(struct student * )malloc(LEN);
scanf("\n%ld,%f",&stu->num,&stu->score);
}
}
用JAVA吧