Introduction to Arrays

Arrays are one of the fundamental data structures in C++. They allow us to store multiple elements of the same type in a contiguous block of memory. Arrays are often used to represent collections of similar objects.

Arrays can be declared and initialized as follows:

1int myArray[5];
2
3myArray[0] = 10;
4myArray[1] = 20;
5myArray[2] = 30;
6myArray[3] = 40;
7myArray[4] = 50;

In the above code snippet, we declare an integer array myArray of size 5. We then assign values to each element of the array using the subscript operator [].

To access an element of an array, we can use the subscript operator [] followed by the index of the element. For example, to access the element at index 3, we would use myArray[3]. The output of the above code would be:

1Element at index 3: 40

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#include <iostream>

using namespace std;

​

int main() {

  // Array declaration

  int myArray[5];

​

  // Array initialization

  myArray[0] = 10;

  myArray[1] = 20;

  myArray[2] = 30;

  myArray[3] = 40;

  myArray[4] = 50;

​

  // Array access

  cout << "Element at index 3: " << myArray[3] << endl;

​

  return 0;

}