std::source_location::file_name

Since C++20

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

# Declarations

constexpr const char* file_name() const noexcept;

(since C++20)

# Return value

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

# Example

#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();
}

# See also