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C++ 果园范围
原标题:C++ char array scope
char* pArray = nullptr;
{
    char buffer[64];
    sprintf_s(buffer,"Time: 123456");
    pArray = buffer;

}
cout<<pArray<<endl;

“时间:123456”即使缓冲已回落到ack点上,也表现出来。 这里正在发生什么? 这是安全的吗? 不安全吗?

最佳回答

The s un Defin conduct。 记忆可能已经清除。

这纯粹是你印本。 当物体偏离范围或删除时,记忆被标明为已释放,而不是实际消失。 该方案可以收回并超出其标准。

问题回答

你没有再利用记忆,但数据仍然存在。

如果你知道你会做些什么,你就不应该这样做了。

你可以使用像这样的黑板,把一些参数传给一种功能,但这种功能非常不安全。





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