#include <iostream.h>
class DataClass
{
private:
     int PrivateDataMember;
public:
    DataClass(int Value);
     int PublicDataMember;
     int PublicMethod(void);
}
DataClass::DataClass(int Value)
{
    PrivateDataMember=Value;
}
int DataClass::PublicMethod(void)
{
    return PrivateDataMember;
}
void main()
{
    DataClass DataObject(1);
    DataObject.PublicDataMember=2;
    cout<<"DataObject.PublicDataMember="<<
DataObject.PublicDataMember<<"n";
    cout<<"DataObject.PrivateDataMember="<<
DataObject.PublicDataMember<<"n";
}

运行后出现：E:\VC++\classes\classes.cpp(12) : error C2533: 'DataClass::DataClass' : constructors not allowed a return type
E:\VC++\classes\classes.cpp(21) : error C2264: 'DataClass::DataClass' : error in function definition or declaration; function not called

我在网上看到有人说：在类定义或者申明时,结束的地方忘了加个';
                    我在public:
                     DataClass(int Value); 加了一个'还是不行啊，
                     int PublicDataMember;
                     int PublicMethod(void)
请教大家怎么办呢

class .....
{
....
....
....
};

刚刚改过来了，一切OK了，谢谢youhm

下次注意吧