定义一个分数类（）Fraction,要求生成三个文件：Fraction.h；Fraction.cpp；test.cpp.

//我全部做在一个文件中了,在VC++2005下调试通过.
//若在VC6.0下,请改下头文件.
#include
#include
using namespace std;
class Fraction;
istream& operator>>(istream&,Fraction&);
ostream& operator(istream&,Fraction&);
friend ostream& operatordeno*x.nume;
}
};
istream& operator>>(istream& istr,Fraction& x)
{
char ch;
coutx.nume>>ch>>x.deno;
if(x.deno ==0)
{
ce