# Standard library header <ccomplex> (C++11)(until C++20), <complex.h> (C++11)

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This header was originally in the C standard library as `<complex.h>`.

### Includes

<complex> (C++11) | Complex number type

### Notes

`<ccomplex>` is deprecated in C++17 and removed in C++20. Corresponding `<complex.h>` is still available in C++20.

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