Question

C语言问题问题

#include <stdio.h>
#include <malloc.h>
#define NULL 0
#define LEN sizeof(struct nobe)
struct nobe
{
int data;
struct nobe * next;
};
int n;
struct nobe * creat(void)
{struct nobe * head;
struct nobe *p1,*p2;
n=0;
p1=p2=(struct nobe *) malloc(LEN);
scanf("%3d",&p1->data);
head=NULL;
while(p1->data!=0)
{n=n+1;
if(n==1) head=p1;
else p2->next=p1;
p2=p1;
p1=(struct nobe *) malloc(LEN);
scanf("%3d",&p1->data);
}
p2->next=NULL;
return(head);
}
void print(struct nobe * head)
{
struct nobe *p;
printf("\nNow,These %d records are:\n",n);
p=head;
if(head!=NULL)
do
{printf("%3d",p->data);
p=p->next;
}while(p!=NULL);
}
struct nobe *delete(struct nobe *head,int t)
{int i=1;
struct nobe *p1,*p2;
if(head==NULL) {printf("\nlist null!\n");return head;}
p1=head;
while((i<t)&&p1->next!=NULL)
{p2=p1;p1=p1->next;i++;}
if(i==t)
{if(p1==head) head=p1->next;
else p2->next=p1->next;
printf("delete %dth data\n",t);}
else printf("Not exist the data!\n");
return(head);
}
struct nobe *insert(struct nobe *head,struct nobe *num,int m)
{struct nobe *p0,*p1,*p2;
int i=1;
p1=head;
p0=num;
if(head==NULL)
{head=p0;p0->next=NULL;}
else
{while (i!=m)
p2=p1;
p1=p1->next;
i++;}
if(i==m)
{if(head==p1) head=p0;
else p2->next=p0;
p0->next=p1;}
else
{p1->next=p0;p0->next=NULL;}
return(head);
}
void main()
{struct nobe *head,num;
int del_num,in_num;
printf("input records:\n");
head=creat();
print(head);
printf("\ninput the deleted order:\n");
scanf("%3d",&del_num);
head=delete(head,del_num);
print(head);
printf("\ninput the insert record:\n");
scanf("%d %d",&num.data,&in_num);
head=insert(head,&num,in_num);
print(head);
}
为什么 检查不出问题，但最后的head=insert(head,&num,in_num); print(head);不运行？
要怎么办呢？谢谢 刚刚在VC里面试了一下，编译时没有错误，组建时出了好几个错误，谢谢
--------------------Configuration: zcyww - Win32 Debug--------------------
Compiling...
zcyww.cpp
d:\zcyww.cpp(44) : error C2059: syntax error : 'delete'
d:\zcyww.cpp(45) : error C2143: syntax error : missing ';' before '{'
d:\zcyww.cpp(45) : error C2447: missing function header (old-style formal list?)
d:\zcyww.cpp(116) : error C2541: delete : cannot delete objects that are not pointers
执行 cl.exe 时出错.
zcyww.obj - 1 error(s), 0 warning(s)
不懂耶，我在VC里新建文件时，那上面是C++ source file,该成.c不是全乱了吗？
而且之前，别的同学运行过 出来啊
那干嘛在TC里运行也有错呢

Answer 1

#include <stdio.h>
#include <malloc.h>
#define NULL 0
#define LEN sizeof(struct nobe)
struct nobe
{
int data;
struct nobe * next;
};
int n;
struct nobe * creat(void)
{
struct nobe * head;
struct nobe *p1,*p2;
n=0;
p1=p2=(struct nobe *) malloc(LEN);
scanf("%3d",&p1->data);
head=NULL;
while(p1->data!=0)
{
n=n+1;
if(n==1)
head=p1;
else
p2->next=p1;
p2=p1;
p1=(struct nobe *) malloc(LEN);
scanf("%3d",&p1->data);
}
p2->next=NULL;
return(head);
}
void print(struct nobe * head)
{
struct nobe *p;
printf("\nNow,These %d records are:\n",n);
p=head;
if(head!=NULL)
do
{printf("%3d",p->data);
p=p->next;
}while(p!=NULL);
}
struct nobe *delete(struct nobe *head,int t)
{
int i=1;
struct nobe *p1,*p2;
if(head==NULL)
{
printf("\nlist null!\n");return head;}
p1=head;
while((i<t)&&p1->next!=NULL)
{
p2=p1;
p1=p1->next;
i++;
}
if(i==t)
{
if(p1==head)
head=p1->next;
else
p2->next=p1->next;
printf("delete %dth data\n",t);
}
else
printf("Not exist the data!\n");
return(head);
}

struct nobe *insert(struct nobe *head,struct nobe *num,int m)
{
struct nobe *p0,*p1,*p2;
int i=1;
p1=head;
p0=num;
if(head==NULL)
{
head=p0;
p0->next=NULL;
}
else
{
while (i!=m)
{
p2=p1;
p1=p1->next;
i++;
}
}
if(i==m)
{
if(head==p1)
head=p0;
else
p2->next=p0;
p0->next=p1;
}
else
{
p1->next=p0;
p0->next=NULL;
}
return(head);
}
void main()
{
struct nobe *head,num;
int del_num,in_num;
printf("input records:\n");
head=creat();
print(head);
// printf("0x%x\n",head);
printf("\ninput the deleted order:\n");
scanf("%3d",&del_num);
head=delete(head,del_num);
print(head);
// printf("0x%x\n",head);
printf("\ninput the insert record:\n");
scanf("%d %d",&num.data,&in_num);
head=insert(head,&num,in_num);
print(head);
// printf("0x%x\n",head);
}
head我跑时没有问题，
问题出在insert里的while你没有加括号。
上面的程序已经可以跑了，你再看看。
-----------------------------------------
我也是在VC里啊，我没有build的错误。你把错误贴出来我瞧瞧
----------------------------------------------
汗，.c
把文件改成.c
c++里delete是关键字，不能定义叫delete的函数。
--------------------------------------------------
你这不就只有一个文件么？改成.c在运行就好了。
TC并不是只能运行C，它也是能跑C++的。.cpp就是C++的方式编译，.c就是c的方式编译。
如果你非要cpp那就把delete改名就行了。