std::char_traits::copy (3) Linux Manual Page
std::char_traits<CharT>::copy – std::char_traits<CharT>::copy
Synopsis
static char_type *copy(char_type *dest, const char_type *src, std::size_t count);
(until C++ 20)
static constexpr char_type *copy(char_type *dest, const char_type *src, std::size_t count);
(since C++ 20)Copies count character from character string pointed to by src to character string pointed to by dest.
Formally, for each i in [0, count), performs assign(src[i], dest[i]).
The behavior is undefined if copied character ranges overlap, i.e. src is in [dest, dest + count).
Parameters
dest – pointer to a character string to copy to
src – pointer to a character string to copy from
count – the number of characters to copy
Return value
dest
Exceptions
(none)
Complexity
Linear.
See also
assign assigns a character
[static]