在这段代码中,当我试图插入链表的前面时,我一直遇到分段错误。我认为这与头部没有适当地改变有关。在这个程序中,篮子是节点。我使用的调试器指向函数的最后一行作为问题,但我不完全确定它来自哪里。节点的分段错误
include <cstdlib>
#include <iostream>
#include <ctime>
#include "BasketList.h"
using namespace std;
Basket::Basket(int _datum, Basket * _next):
egg_num(_datum), nextBasket(_next)
{}
int Basket::getEggs() const
{
return egg_num;
}
Basket const* Basket::getNextBasket() const
{
return nextBasket;
}
BasketList::BasketList() :
head (NULL)
{}
void BasketList::insertBasket(int eggs)
{
Basket *currPtr = head;
Basket *prevPtr = NULL;
Basket *newBasketPtr;
if(eggs < head->egg_num)
{
currPtr->nextBasket = head;
head = currPtr;
}
while(currPtr != NULL && eggs > currPtr->egg_num)
{
prevPtr = currPtr;
currPtr = currPtr->nextBasket;
}
newBasketPtr = new Basket(eggs, currPtr);
prevPtr->nextBasket = newBasketPtr;
}
你能否给我们一个[最小完整示例](http://stackoverflow.com/help/mcve)?这会为我们节省很多繁琐的工作。 – Beta
prevPtr在第一次插入时几乎肯定是NULL。 – dbeer