Write a C++ program using the concept of OOP to find the second smallest element in an array

 Write a C++ program using the concept of OOP to find the second smallest element in an array

Algorithm:

1. Create a class called "Array"
2. Define variables for size and a pointer to an array to store the elements
3. Create a constructor to initialize the size and allocate memory for the array
4. Create a method called "input" to take input from the user and store it in the array
5. Create a method called "sort" to sort the array in ascending order
6. Create a method called "secondSmallest" to find the second smallest element in the array
7. Create an object of the Array class and use the methods to find the second smallest element

C++ Program:

#include <iostream>
using namespace std;
 
class Array {
    int size;
    int *arr;
  public:
    Array(int s) {
        size = s;
        arr = new int[size];
    }
    void input() {
        cout << "Enter elements of array: " << endl;
        for(int i = 0; i < size; i++)
            cin >> arr[i];
    }
    void sort() {
        for(int i = 0; i < size; i++) {
            for(int j = i+1; j < size; j++) {
                if(arr[i] > arr[j]) {
                    int temp = arr[i];
                    arr[i] = arr[j];
                    arr[j] = temp;
                }
            }
        }
    }
    void secondSmallest() {
        cout << "The second smallest element is: " << arr[1] << endl;
    }
    ~Array() {
        delete[] arr;
    }
};
 
int main() {
    int s;
    cout << "Enter the size of the array: ";
    cin >> s;
    Array a(s);
    a.input();
    a.sort();
    a.secondSmallest();
    return 0;
}
 
 
/*
======Input/Output=====
Enter the size of the array: 5
Enter elements of array: 
10 20 30 40 50
 
The second smallest element is: 20
*/

Explanation:
The user enters 5 for the size of the array, indicating that the array has 5 elements.
The user then enters the elements of the array: 10 20 30 40 50
The program creates an Array object, sorts the array in ascending order, and finds the second smallest element which is 20 and prints the result.

#OOP
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