改错
请帮我改错，谢谢！
#include<stdio.h>
#include<malloc.h>
#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 *p1,*p2,*head;
n=0;
p1=p2=(struct student*) malloc(len);
scanf("%ld,%f",&p1->num,&p2->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;
print("\nnow,there %d records are:\n",n);
p=head;
if(head!=null)
do
{
printf("%ld %5.ldf",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! \nlist null! \n");goto end;
}
p1=head;
while(num!==p1->num&&p1->next!==null\n")
{
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);
end;
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;
}
if(p0->num<=p1->num)&&(p1->next!=null))
{
p2=p1;
p1=p1->next;
}
if (p0->num<=p1->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 record :\n");
head=creat();
print(head);
printf("ninput the deleted number:");
scanf("%ld",&del_num);
head=del(head,del_num);
print(head);
printf("\ninput the inserted record:");
scanf("%ld,%f",&stud.num,&stud.score);
head=insert(head,&stu);
print(head);
}
[解决办法]
就是一些小错误 自己在看下把
#include <stdio.h>
#include <malloc.h>
#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 *p1,*p2,*head;
n=0;
p1=p2=(struct student*) malloc(len);
scanf("%ld,%f",&p1-> num,&p2-> 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,there %d records are:\n",n);
p=head;
if(head!=null)
do
{
printf("%ld %5.ldf",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! \nlist null! \n");
goto end;
}
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);
end:
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;
}
if((p0->num <p1-> num)&&(p1-> next!=null))
{
p2=p1;
p1=p1-> next;
}
if (p0-> num <=p1-> 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,stud;
long del_num;
printf("input record :\n");
head=creat();
print(head);
printf("ninput the deleted number:");
scanf("%ld",&del_num);
head=del(head,del_num);
print(head);
printf("\ninput the inserted record:");
scanf("%ld,%f",&stud.num,&stud.score);
head=insert(head,&stud);
print(head);
}
#include <stdio.h> #include <malloc.h> #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 *p1,*p2,*head; n=0; p1=p2=(struct student*) malloc(len); scanf("%ld,%f",&p1-> num,&p2-> 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,there %d records are:\n",n); p=head; if(head!=null) do { printf("%ld %5.ldf",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! \nlist null! \n");goto end; } 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); end: 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; } if((p0->num<=p1->num)&&(p1->next!=null)) { p2=p1; p1=p1-> next; } if (p0-> num <=p1-> 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 record :\n"); head=creat(); print(head); printf("ninput the deleted number:"); scanf("%ld",&del_num); head=del(head,del_num); print(head); printf("\ninput the inserted record:"); scanf("%ld,%f",&stu.num,&stu.score); head=insert(head,&stu); print(head); }
[解决办法]
#include <stdio.h>
#include <malloc.h>
#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 *p1,*p2,*head;
n=0;
p1=p2=(struct student*) malloc(len);
scanf("%ld,%f",&p1-> num,&p2-> 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,there %d records are:\n",n);
p=head;
if(head!=null)
do
{
printf("%ld %5.ldf",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! \nlist null! \n");
goto end;
}
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);
end:
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;
}
if((p0->num<=p1->num)&&(p1->next!=null))
{
p2=p1;
p1=p1-> next;
}
if (p0-> num <=p1-> 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);
void main()
{
struct student *head,stud;
long del_num;
printf("input record :\n");
head=creat();
print(head);
printf("ninput the deleted number:");
scanf("%ld",&del_num);
head=del(head,del_num);
print(head);
printf("\ninput the inserted record:");
scanf("%ld,%f",&stud.num,&stud.score);
head=insert(head,&stud);
print(head);
}