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authorLeitwolf112026-10-31 13:01:04 +0300
committerLeitwolf112026-10-31 13:01:04 +0300
commit1f5458322669301f62599c1ec5dacb77b5dc2d8d (patch)
tree7e32402fa9c06014328a27d7972c2fb1a9484352 /Guide/C-INTERFACES.md
parent8d1fb4807edc7920fbecd0554c9c61625827e19c (diff)
downloadprogmasoft-cpp-docs/cpp17-and-cpp20.tar.gz
Cover C++17 as well as C++20docs/cpp17-and-cpp20
A project now picks one version. C++20 stays the default, and C++17 is for libraries meant for other people's projects, because it is still the widest common target and works in every later standard. Section 5.13 gives the C++17 form of each C++20 feature the guide uses and the checks such a project needs: CI in the versions it promises, with each compiler, and headers that compile in default compiler modes. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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diff --git a/Guide/C-INTERFACES.md b/Guide/C-INTERFACES.md
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--- a/Guide/C-INTERFACES.md
+++ b/Guide/C-INTERFACES.md
@@ -4,7 +4,7 @@
# 10. C interfaces
A C interface is the stable binary boundary of a library: what another language, another compiler or another version of
-the library links against. It is written in C11 and kept small; everything behind it is C++20.
+the library links against. It is written in C11 and kept small; everything behind it is C++.
## 10.1 The header
@@ -83,7 +83,7 @@ example_parser_destroy(example_parser *parser);
## 10.4 The C++ side
-Behind the interface, the implementation is ordinary C++20 that follows the rest of this guide:
+Behind the interface, the implementation is ordinary C++ that follows the rest of this guide:
```cpp
extern "C" auto