NAME

std::source_location::file_name - std::source_location::file_name

Synopsis

constexpr const char* file_name() const noexcept; (since C++20)

Returns the name of the current source file represented by this object, represented
as a null-terminated byte string.

Parameters

(none)

Return value

The name of the current source file represented by this object, represented as a
null-terminated byte string.

Example

// Run this code

#include <iostream>
#include <source_location>

void print_this_file_name(
std::source_location location = std::source_location::current())
{
// Name of file that contains the call site of this function.
std::cout << "File: " << location.file_name() << '\n';
}

int main()
{
#line 1 "cppreference.cpp"
print_this_file_name();
}

Output:

File: cppreference.cpp

See also

line return the line number represented by this object
(public member function)
column return the column number represented by this object
(public member function)
function_name return the name of the function represented by this object, if any
(public member function)
gets the name of the source file that lexically contains the
source_file expression or statement whose evaluation is represented by the
(C++23) stacktrace_entry
(public member function of std::stacktrace_entry)
Filename and line information