ISO C++ forbids defining types within return type

iyxing

#include <iostream>
using namespace std;
class Deta
{public:
Deta(int,int,int);
Deta(int,int);
Deta(int);
Deta();
void display();
private:
int x;
int y;
int z;
}
Deta :: Deta(int a,int b,int c): x(a),y(b),z(c)
{}
Deta :: Deta(int a,int b): x(a),y(b)
{
z=2006;
}
Deta :: Deta(int a): x(a)
{
y=1;
z=2006;
}
Deta:: Deta()
{
x=10;
y=1;
z=2006;
}
void Deta::display()
{cout<<x<<"x"<<y<<"y"<<z<<"z"<<endl;
}
int main()
{Deta one(1,19,5006);
Deta two(1,19);
Deta thw;
one.display();
two.display();
thw.display();
return 0;
}
编译的时候出现
# g++ -o m m.cpp
m.cpp:17: ISO C++ forbids defining types within return type
m.cpp:17: return type specification for constructor invalid
要怎么改?帮帮忙

笑天天

请在你类的声明的最后加一个";"