std::experimental::source_location::line
From cppreference.com
constexpr std::uint_least32_t line() const noexcept;
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(library fundamentals TS v2) | |
Returns the line number represented by this object.
Parameters
(none)
Return value
The line number represented by this object.
Example
Run this code
#include <experimental/source_location>
#include <iostream>
#include <string_view>
using std::experimental::source_location;
inline void cur_line(
const std::string_view message = "",
const source_location& location = source_location::current())
{
std::cout
<< location.line() // <- the call-site line #
<< ") "
<< message;
}
int main()
{
cur_line("++" "\n");
cur_line(); std::cout << "Hello," "\n";
cur_line(); std::cout << "C++20!" "\n";
cur_line("--" "\n");
}
Output:
18) ++
19) Hello,
20) C++20!
21) --
See also
| return the column number represented by this object (public member function) | |
| return the file name represented by this object (public member function) | |
| return the name of the function represented by this object, if any (public member function) | |
C++ documentation for Filename and line information
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