2022/5/13 hgc - > experience

private : 
    char * name;
    char * address;
    char * city;
    char * youbian;
public : 
  
    Employee( char* n = "",  char* add = "",  char* ct = "", char* cd = "") : name(n), address(add), city(ct), youbian(cd) {}
    void change_name( char * name1) {
        name  = name1; 
    }
    void display() {
       cout << "name: " << name << endl;
		cout << "address: " << address << endl;
		cout << "city: " << city << endl;
		cout << "code: " << youbian << endl;
    }

2

 int t = a;
    a = b;
    b = t;