#include
using namespace std;
class ImplicitClass {
private:
int member;
public:
ImplicitClass(int x) : member(x) {};
void print() const { cout << "ImplicitClass : " << member << endl; }
};
class ExplicitClass {
private:
int member;
public:
explicit ExplicitClass(int x) : member(x) {};
void print() const { cout << "ExplicitClass : " << member << endl; }
};
void checkImplicitClass(ImplicitClass p) {
p.print();
}
void checkExplicitClass(ExplicitClass p) {
p.print();
}
int main() {
ImplicitClass imp(10);
ExplicitClass exp(20);
checkImplicitClass(imp);
checkExplicitClass(exp);
checkImplicitClass(40);
// checkExplicitClass(50); // Not allowed since the constructor is explicit
return 0;
}