How to Copy an Array in C++ - Step by Step Examples

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How to Copy an Array in C++ ?

Answer

To copy an array in C++, you can use the copy() algorithm from the header or use a loop to copy each element.

✐ Examples

1 Copying an Array using copy() Algorithm

In this example,

We create an array named arr1 with elements.
We then create a new array arr2 with the same length as arr1.
We use the copy() algorithm from the header to copy elements from arr1 to arr2.

C++ Program

#include <iostream>
#include <algorithm>
#include <iterator>
int main() {
    int arr1[] = {1, 2, 3, 4, 5};
    int arr2[sizeof(arr1) / sizeof(arr1[0])];
    std::copy(std::begin(arr1), std::end(arr1), std::begin(arr2));
    std::cout << "Array 1:";
    for (int i : arr1) {
        std::cout << " " << i;
    }
    std::cout << "\nArray 2 (copy of Array 1):";
    for (int i : arr2) {
        std::cout << " " << i;
    }
    return 0;
}

Output

Array 1: 1 2 3 4 5
Array 2 (copy of Array 1): 1 2 3 4 5

Summary

In this tutorial, we learned How to Copy an Array in C++ language with well detailed examples.