# std::filesystem::path::is_absolute,is_relative

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< cpp‎ | filesystem‎ | path

bool is_absolute() const; | (1) | (since C++17)
bool is_relative() const; | (2) | (since C++17)

Checks whether the path is absolute or relative. An absolute path is a path that unambiguously identifies the location of a file without reference to an additional starting location. The first version returns true if the path, in native format, is absolute, false otherwise; the second version the other way round.

### Parameters

(none)

### Return value

1) true if the path is absolute, false otherwise.
2) false if the path is absolute, true otherwise.

### Exceptions

May throw implementation-defined exceptions.

### Notes

The path "/" is absolute on a POSIX OS, but is relative on Windows.

### See also

absolute (C++17) | composes an absolute path (function)

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