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#include <iostream>
using namespace std;
class A{
public:
// variables
char m;
// methods
A(){
cout<<"建構元被呼叫了"<<endl;
}
~A(){
cout<<"解構元被呼叫了"<<this->m<<endl;
}
A (const A& y){
//this->m = y.m;
cout<<"拷貝建構元被呼叫了"<<endl;
}
};
A f(A x){
cerr << "in f(x): " << endl;
x.m='L';
cerr << "f(x) assigned" << endl;
return x ;
}
int main()
{ A A1;
cerr << "A1 created" << endl;
A1.m='K';
cerr << "A1.m assigned" << endl;
cout<<f(A1).m<<endl;
cerr << "f(A1).m printed" << endl;
return 0;
}
