std::filesystem::absolute

Returns a path referencing the same file system location as p, for which filesystem::path::is_absolute() is true

Parameters

Return value

Returns an absolute (although not necessarily canonical) pathname referencing the same file as p.

Exceptions

Any overload not marked noexcept may throw std::bad_alloc if memory allocation fails.

Notes

Implementations are encouraged to not consider p not existing to be an error.

For POSIX-based operating systems, std::filesystem::absolute(p) is equivalent to std::filesystem::current_path ( ) / except for when p

For Windows, std::filesystem::absolute may be implemented as a call to GetFullPathNameW

Example

#include <filesystem>
#include <iostream>
namespace fs = std::filesystem;
 
int main()
{
    std::filesystem::path p = "foo.c";
    std::cout << "Current path is " << std::filesystem::current_path() << '\n';
    std::cout << "Absolute path for " << p << " is " << fs::absolute(p) << '\n';
}

Current path is "/tmp/1666297965.0051296"
Absolute path for "foo.c" is "/tmp/1666297965.0051296/foo.c"

See also