#include <string>
#include <iostream>
using namespace std;
class People {
public:
    string name;
    People(string name) {
        People::name=name;
    }
    void setName(string name) {
        People::name=name;
    }
    string getName() {
        return People::name;
    }
};

void invalidRef(People);
void validRef(People*);

int main() {
    People p1("p1");
    cout <<&p1<<endl;
    invalidRef(p1);
    validRef(&p1);
    return 0;
}

void invalidRef(People p) {
    //In this case, object address is overridden by the local variable
    cout <<&p<<endl;
}

void validRef(People* _p) {
    cout <<_p<<endl;
}