#include<iostream>
using namespace std;

class Integer
{
int i;
public:
Integer(int j){i=j;}
void print(ostream&out){out<<i;}
friend Integer operator+(Integer &in,int j)
{
// Integer *n=new Integer(in.i+j);
// return *n;
}
};

void main()
{}

编译，错误如下（把上边蓝色的部分去掉就没问题了）：

--------------------Configuration: Z - Win32 Debug--------------------
Compiling...
main.cpp
F:\projects\Z\main.cpp(12) : fatal error C1001: INTERNAL COMPILER ERROR
(compiler file 'msc1.cpp', line 1786)
Please choose the Technical Support command on the Visual C++
Help menu, or open the Technical Support help file for more information
Error executing cl.exe.

main.obj - 1 error(s), 0 warning(s)

知道的解释一下啊！谢谢。