[#absl-c_copy_n-07]
= xref:absl.adoc[absl]::c_copy_n
:relfileprefix: ../
:mrdocs:

Copies the first `n` elements from `input` to `output`. `absl::c_copy_n(input, n, output)` is equivalent to `std::copy_n(std::begin(input), n, std::begin(output))`.

== Synopsis

Declared in `<absl/algorithm/container.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    typename C,
    typename Size,
    typename OutputRange>
constexpr
/* implementation-defined */
c_copy_n(
    C const& input,
    Size n,
    OutputRange&& output);
----

== Description

The `output` container must be large enough to hold N elements; this function does not resize `output`.

If `n > std::size(output)` or `n > std::size(input)`, behavior is undefined. If `std::size(output) > n`, only `n` elements are copied, and `output` is not truncated.

== Return Value

This overload returns no value; the results are written into `output`.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *input*
| The container whose elements to copy.
| *n*
| The number of elements to copy.
| *output*
| The destination container receiving the copied elements.
|===


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