关于 new 类 delete

[cuiran]

int CTestCBase::userListFun()
{
CUser * user = new CUser();
user->setAge(12);
user->setId(100);
userList.push_back(user);
delete[] user;
int a=user->getAge();
return 0;
}

int main()
{
list<CUser *>::iterator plist;
for (plist = userList.begin();plist!=userList.end();++plist)
{
CUser *user=(*plist);
printf("user id = %d\n user age= %d\n",user->getId(),user->getAge());
}

}

userList 长度等于 = 1 但是 printf();打出不是 100 和12 问什么 ？ 刚学 谢谢 哦

[pcboyxhy]

已经被你delete掉了
user不是数组，不能delete[]

[cuiran]

user 对象不是 new 出来的吗

[www_adintr_com]

userListFun 似乎根本就没有被调用过。。。。

[cuiran]

哦。不好意思。写少了一句 。
void main()
{
userListFun();
printf("userList = %d \n ",userList.size());
list<CUser *>::iterator plist;
for (plist = userList.begin();plist!=userList.end();++plist)
{
CUser *user=(&*plist);
printf("user id = %d\n user age= %d\n",user->getId(),user->getAge());
}
}

[cuiran]

void main()
{
CTestCBase * testCBase = new CTestCBase();
testCBase->userListFun();
printf("userList = %d \n ",userList.size());
list<CUser *>::iterator plist;
for (plist = userList.begin();plist!=userList.end();++plist)
{
CUser *user=(&*plist);
printf("user id = %d\n user age= %d\n",user->getId(),user->getAge());
}
}
是这样的

[cuiran]

delete[] user 改成 delete user 也不行。

[www_adintr_com]

去掉 delete user

[太乙]

delete[] user; ---改为delete user
已经删除了！！！

[cuiran]

那么，最后不用销毁对象user 吗

[www_adintr_com]

用完之后再销毁, main 结束之前加一段：

for (plist = userList.begin();plist!=userList.end();++plist)
{
delete *plist;
}

[cuiran]

哦。明白了。谢谢。