struct addresses {
  int houseno;
  String streetName;
};

struct students{		
String name;	
int age;		
int rollno;		
struct addresses addr; // the struc type word is not required in C++ 
};

struct students john {"John", 24, 555, {22, "Willow Road"}};
struct students clare, bob;

void setup() {
  
Serial.begin(9600);

struct students *ptr;
ptr = &john;
ptr -> age = 44;
clare.name = "Clare";

Serial.println(clare.name);
Serial.println(bob.name);
Serial.println(john.name);
Serial.println(ptr->age);
Serial.println(ptr->addr.houseno);
Serial.println(ptr->addr.streetName);
}

void loop() {
}