复试C++ 异常 看程序写结果

就算每一个case后面都没有break ， throw相当于起了break的作用？

#include <iostream>
#include <stdexcept>
using namespace std;
class ErrorA: public runtime_error{
public:
    ErrorA():runtime_error{"errorAAAA"}{
    }
};

class ErrorB: public runtime_error{
public:
    ErrorB():runtime_error{"errorBBBB"}{
    }
};

class ErrorC: public ErrorA{
public:
    ErrorC(){
        runtime_error{"errorCCCC"};
    }
};
int main(){
    for(int i = 0 ;i < 4; i++){
        try{
            switch(i){
                case 0:throw runtime_error{"runtime_error1111"}; break;
                case 1:throw ErrorA();
                case 2:throw ErrorB();
                case 3:throw ErrorC();
            }         
        }catch(ErrorA &err){
            cout << err.what() << endl;
        }catch(ErrorB &err){
            cout << err.what() << endl;
        }catch(ErrorC &err){
            cout << err.what() << endl;
        }catch(runtime_error &err){
            cout << err.what() << endl;
        }
    }
    return 0;
}

结果

runtime_error1111
errorAAAA
errorBBBB
errorAAAA