#include <iostream>
#include <cstring>
using namespace std;
 
void swapTest(char*& name_1, char*& name_2){
    
    char * tmp = name_2;
    name_2 = name_1;
    name_1 = tmp;
    
}
 
int main () {
    
    char* name_1 = new char[20];
    char* name_2 = new char[20];
    
    strcpy(name_1,"Joseph");
    strcpy(name_2,"Marc");
    
    cout << name_1 << " " << name_2<<endl;
    
    swapTest(name_1,name_2);
    
    cout << name_1 << " " << name_2;
    
    return 0;
}