array

An array is a series of elements of the same type placed in contiguous memory locations that can be individually referenced by adding an index to a unique identifier.
Declaration:

int arr[10]; //Declares an array named arr of size 10, i.e; you can store 10 integers.

Accessing elements of an array:

Indexing in arrays starts from 0.So the first element is stored at arr[0],the second element at arr[1]...arr[9]

Ex: Accept array elements and display in reverse order

#include <cmath>
#include <cstdio>
#include <vector>
#include <iostream>
#include <algorithm>
using namespace std;


int main() {
   int N;
cin>>N;
int  *arr =new int[N];
for(int i=0;i<N;i++)
{
    cin>>arr[i];
}

for(int i=N-1;i>=0;i--)
{
    cout<<arr[i]<<" ";
} 
    return 0;
}
 

Input (stdin)

4 
1 4 3 2

Your Output (stdout)

2 3 4 1