std::basic_string::copy
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< Strings library | basic stringCpp/docs/latest/string/basic string/copy
std::basic_string::copy
|
Copies a substring [pos, pos+count)
to character string pointed to by dest
. If the requested substring lasts past the end of the string, or if count == npos
, the copied substring is [pos, size())
. The resulting character string is not null-terminated.
If pos > size()
, std::out_of_range
is thrown.
Parameters
dest | - | pointer to the destination character string |
pos | - | position of the first character to include |
count | - | length of the substring |
Return value
number of characters copied.
Exceptions
std::out_of_range
if pos > size()
.
Complexity
linear in count
.
Example
#include <string>
#include <iostream>
int main()
{
std::string foo("quuuux");
char bar[7]{};
foo.copy(bar, sizeof bar);
std::cout << bar << '\n';
}
Output:
quuuux
See also
returns a substring (public member function) |
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