Question

This is the same question asked in C# but i need for C++

How can I copy a part of an array to another array?

Consider I’m having

    int[] a = {1,2,3,4,5};

Now if I give the start index and end index of the array a it should get copied to another array.

Like if I give start index as 1 and end index as 3, the elements 2, 3, 4 should get copied in the new array.

In C# it is done as following

     int[] b = new int[3];
    Array.Copy(a, 1, b, 0, 3);

Is there any simple way like this to do the same task in C++?

Answer 1

Yes, use std::copy:

std::copy(a + src_begin_index,
          a + src_begin_index + elements_to_copy,
          b + dest_begin_index);

The equivalent of your C# example would be:

std::copy(a + 1, a + 4, b);