Get input for array of unknown length/size in c++

To receive input for an array of unknown length/size in C++, you can use dynamic memory allocation with pointers. Here are the steps to achieve this:

1. Declare a pointer of the desired data type.
2. Use the "new" keyword to allocate memory for the array based on the input size.
3. Prompt the user to input the elements of the array.
4. Store the input values in the dynamically allocated memory.
5. Perform the necessary operations using the array.
6. Deallocate the memory using the "delete[]" keyword to free the memory after its use.

Here is an example of how you can achieve this:

#include <iostream>
using namespace std;

int main() {
    int size;
    cout << "Enter the size of the array: ";
    cin >> size;

    int *dynamicArray = new int[size];

    cout << "Enter the elements of the array:" << endl;
    for (int i = 0; i < size; i++) {
        cin >> dynamicArray[i];
    }

    // Perform operations using the array

    delete[] dynamicArray;

    return 0;
}