一个错误有关问题~

一个异常问题~~~
#include <iostream>
#include <exception>
using namespace std;

class Up{};
class Fit{};
void g();

void f(int i)throw(Up,Fit){
switch(i)
{case 1:
throw Up();break;
case 2:
throw Fit();break;
}
g();
}

void g(){throw 47;}

void my_unexpected(){
cout<<"unexpected exception thrown"<<endl;
exit(0);
}

int main(){
set_unexpected(my_unexpected);
for(int i=1;i<=3;i++)//???运行到i=3的时候按理说应该会调用set_unexpected(my_unexpected)函数啊
try{f(i);}
catch(Up&){cout<<"Up caught"<<endl;}
catch(Fit&){cout<<"Fit caught"<<endl;}
return 0;
}

望高人赐教

[解决办法]

C/C++ code

#include  <iostream> #include  <exception> using namespace std; class Up{}; class Fit{}; void g(); void my_unexpected(){     cout <<"unexpected exception thrown" <<endl;     exit(0); } void f(int i)throw(Up,Fit){     switch(i)     {    case 1:         throw Up();break;     case 2:         throw Fit();break;     default:// 这里没有对i！=1 ，2之外的情况进行处理所会抛出异常。        throw my_unexpected();break;// 晕o！我以为什么事哦！你在加上你的处理就可以啊，我之前没看到你这个函数是用来干嘛啊！    }     g(); } void g(){    throw 47;} int main(){     set_unexpected(my_unexpected);     for(int i=1;i <=3;i++)    try    {        f(i);    }     catch(Up&)    {        cout <<"Up caught" <<endl;    }     catch(Fit&)    {        cout <<"Fit caught" <<endl;    }     return 0; }