How do I insert an element into an array in C++?

How do I insert an element into an array in C++?

In C++, you can't directly insert an element into a fixed-size array. You can create a new array with a larger size and copy the elements over.

Can you show me an example of that?

Sure! Here's a simple example:

#include <iostream>
using namespace std;

int main() {
    int arr[5] = {1, 2, 3, 4}; // original array
    int newElement = 5;
    int newArr[6]; // new array with one extra space

    for (int i = 0; i < 4; i++) {
        newArr[i] = arr[i]; // copy old elements
    }
    newArr[4] = newElement; // insert new element

    // Print new array
    for (int i = 0; i < 5; i++) {
        cout << newArr[i] << " ";
    }
    return 0;
}

What if I want to insert at a specific position?

You would need to shift the elements after the insertion point to the right. Here's how you can do that:

#include <iostream>
using namespace std;

int main() {
    int arr[5] = {1, 2, 3, 4};
    int newElement = 5;
    int position = 2; // position to insert
    int newArr[6];

    for (int i = 0; i < position; i++) {
        newArr[i] = arr[i];
    }
    newArr[position] = newElement;
    for (int i = position; i < 4; i++) {
        newArr[i + 1] = arr[i];
    }

    // Print new array
    for (int i = 0; i < 5; i++) {
        cout << newArr[i] << " ";
    }
    return 0;
}