那个..初学者求教一下...

[Emrlay]

刚开始学C++ 求教个问题..

代码如下

#include <iostream>
using namespace std;

struct Node{
int content;
Node *next;
};

bool remove(Node *&h,int &a,int pos)
{
if (pos == 1)
{
Node *p=h;
h=h->next;
a=p->content;
delete p;
p=NULL;
return true;
}
else
{
Node *p=h;
int j=1;
while (j < pos-1)
{
if (p->next == NULL)
break;
p=p->next;
j++;
}
if (p->next != NULL)
{
Node *q=p->next;
p->next=q->next;
a=q->content;
delete q;
q=NULL;
return true;
}
else
{
cout<<"error!"<<endl;
return false;
}
}
}


int main()
{
Node s1,s2,s3,s4,s5;
s1.content=1;
s1.next=&s2;
s2.content=2;
s2.next=&s3;
s3.content=3;
s3.next=&s4;
s4.content=4;
s4.next=&s5;
s5.content=5;
s5.next=NULL;
Node *h=&s1;
int b;

remove(h,b,3);

for (Node *p=h; p != NULL;p=p->next)
cout<<p->content<<endl;
cout<<"The deleted number is "<<b<<endl;
getchar();

return 0;
}

代码在DEV中可以通过,但是VC++ 6.0就出现断言错误,我查了一些资料说是野指针/数组越界..的确将delete语句注释掉之后就可以运行，但不明白是怎么错了 求各位大神解答 小弟多谢了！

[jixiang1983]

delete总是与new配对使用，只有动态创建（使用new)的数据才能使用delete来删除，LZ的main函数中5个Node型的数据都是直接创建的（使用的是栈内存，数据自动销毁）， 不能用delete删除。

[jixiang1983]

要想使用delete删除，在创建时应该使用指针：
int main()
{
Node* s1 = new Node;
Node* s2 = new Node;
Node* s3 = new Node;
Node* s4 = new Node;
Node* s5 = new Node;
s1->content = 1;
s1->next = s2;
s2->content = 2;
s2->next = s3;
s3->content = 3;
s3->next = s4;
s4->content = 4;
s4->next = s5;
s5->content = 5;
s5->next = NULL;
Node * h = s1;
int b;

remove(h,b,3);

for (Node *p=h; p != NULL;p=p->next)
cout<<p->content<<endl;
cout<<"The deleted number is "<<b<<endl;
getchar();

return 0;
}

[Emrlay]

谢谢LS！