geeksforgeeks-069-c++中的catch块和类型转换

#include <iostream>
using namespace std;
 
int ()
{
    try
    {
        throw 'x';
    }
    catch(int x)
    {
        cout << " Caught int " << x;
    }
    catch(...)
    {
        cout << "Defaule catch block";
    }
}

Defaule catch block

#include <iostream>
using namespace std;
 
class MyExcept1 {};
 
class MyExcept2
{
public:
 
    
    MyExcept2 (const MyExcept1 &e )
    {
        cout << "Conversion constructor called";
    }
};
 
int ()
{
    try
    {
        MyExcept1 myexp1;
        throw myexp1;
    }
    catch(MyExcept2 e2)
    {
        cout << "Caught MyExcept2 " << endl;
    }
    catch(...)
    {
        cout << " Defaule catch block " << endl;
    }
    return 0;
}

Defaule catch block