Arrays Of Structures

Structures can contain any type of variable, pointer, array. Further, structures can be nested. For example, given a structure called Contact: 
struct Contact
{
    char name[20];
    int number;
};
one or more variables of type Contact can be included in another structure: 
struct ContactCouple
{
    Contact one;
    Contact two;
};
In this case, the structure members are accessed through a multiple use of the dot . operator: 
ContactCouple aCouple;
strcpy(aCouple.one.name, "Jane");
strcpy(aCouple.two.name, "Sam");
Contact array elements are accessed through the [] operator: 
strcpy(arrayOfContact[0].name, "Mike");
arrayOfContact[0].number = 123456;
The address of a structure can be assigned to a structure pointer. The second of the following statements assigns to pContact the address of the first element of the array arrayOfContact 
Contact *pContact;
pContact = arrayOfContact;
The address of a field of a structure can be assigned to a pointer: 
int *pInt;
pInt = &aCouple.one.number;


Example


#include <iostream>
#include <cstring>
using namespace std;

struct Contact
{
    char name[20];
    int number;
};

struct ContactCouple
{
    Contact one;
    Contact two;
};

void printContact(Contact c)
{
     cout << "name: " << c.name << endl;
     cout << "number: " << c.number << endl;
     cout << endl;;
}

int main()
{
    ContactCouple aCouple; // nested structure
    strcpy(aCouple.one.name, "Jane");
    strcpy(aCouple.two.name, "Sam");
    aCouple.one.number = 111222;
    aCouple.two.number = 123321;

    cout << "aCouple.one: " << endl;
    printContact(aCouple.one);

    cout << "aCouple.two: " << endl;
    printContact(aCouple.two);

    Contact arrayOfContact[10]; // array of structures
    strcpy(arrayOfContact[0].name, "Mike");
    arrayOfContact[0].number = 123456;

    Contact *pContact; // pointer to a structure
    pContact = arrayOfContact;
    printContact(pContact[0]);

    int *pInt; // pointer to a structure field
    pInt = &aCouple.one.number;
    cout << "pInt: " << *pInt;
}

Output

aCouple.one:
name: Jane
number: 111222

aCouple.two:
name: Sam
number: 123321

name: Mike
number: 123456

pInt: 111222