A structure defines how a given object is built. Inside it, we define its properties (variables). We can address these variables by an object, which we place in the main function. We create a structure as shown below. Remember about the semicolon after the braces. It is there because we could also make it like this: } human;. We can define the structure's variables both inside and outside of it. Structures can contain functions.

#include <iostream>
using namespace std;

struct Human {
    string name;
    string surname = "Smith";
    string phoneNr;
    string ID;
    unsigned short age;
    void display() {cout << name << endl;}
};
            
int main() {
    Human human; // the structure's object (like using a data type)
    human.name = "John";

    human.display();
    cout << human.name << endl;
    cout << human.surname << endl;
    
    return 0;
}
                                    

When we create the structure's object as an array, all of the structure's variables can have a different value for every index.

#include <iostream>
using namespace std;

struct Human {
    string name;
    string surname;
    string phoneNr;
    string ID;
    unsigned short age;
};
            
int main() {
    Human human[10];

    human[0].name = "Liam";
    cout << human[0].name << endl;
    cout << human[1].name << endl;
    
    human[1].name = "Noah";
    cout << human[0].name << endl;
    cout << human[1].name << endl;
    
    return 0;
}
                                    

#include <iostream>
using namespace std;

struct Human {
    string name;
    string surname;
    string phoneNr;
    string ID;
    unsigned short age;
};
            
int main() {
    Human human[10];

    human -> name = "Olivia"; // this is the same as (*human).name = "Olivia";
    cout << human[0].name << endl;
    
    (human + 1) -> name = "Emma";
    cout << human[1].name << endl;

    cout << "Simpler notation:" << endl;
    
    Human *pointer = &human[0]; // it points on the "Human" data type
    
    cout << pointer++ -> name << endl;
    cout << pointer -> name << endl;
    
    return 0;
}