string::c_str
@}
Synopsis
char const*
c_str() const noexcept;
Description
Return the underlying character array directly.
Returns a pointer to the underlying array serving as storage. The value returned is such that the range [c_str(), c_str() + size())
is always a valid range, even if the container is empty.
The value returned from this function is never equal to |
Complexity
Constant.