C++ - 运算符重载错误C4430:缺少类型说明符 - 假定为int

Question

我使用Borland 5.5编译了我的代码,没有出现错误.但它没有正确运行所以我决定使用Visual Studio 2010来调试我的程序.

Visual Studio给了我这个错误:

Error   1   error C4430: missing type specifier - int assumed. Note: C++ does not support default-int   c:\users\johnny\documents\visual studio 2010\projects\stack_linkedlist\stack_linkedlist\classstack.cpp  111 1   STACK_LinkedList

它指向我的操作员过载功能.这是我的运算符重载的代码.

//operator overload
template <class S>
const Stack<S>::operator=( const Stack& s )
{
    // Check for self assignment
    if (&s==this)
        return *this;

    // Clear the current stack
     while (s.theFront)
        {
            NodePointer p = s.theFront;

            s.theFront = s.theFront->next;
            delete p;
        }

        s.theTop = s.theFront;


    // Copy all data from stack s
    if (!s.isEmpty())
    {
        NodePointer temp = q->theFront;

        while(temp != 0)
        {
            push(temp->data);
            temp = temp->next;
        }
    }

   return *this;
}

任何帮助都是极好的!谢谢!

Answer 1

没有为您的运营商定义退货类型.

const Stack<S>::operator=( const Stack& s )

应改为:

const Stack<S>& Stack<S>::operator=( const Stack& s )