[UCRT] Import Microsoft.Windows.SDK.CRTSource version 10.0.22621.3

Imported from https://www.nuget.org/packages/Microsoft.Windows.SDK.CRTSource/10.0.22621.3
License: MIT

sdk/lib/ucrt/conio/cscanf.cpp

@@ -0,0 +1,56 @@
+//
+// cscanf.cpp
+//
+//      Copyright (c) Microsoft Corporation. All rights reserved.
+//
+// The core formatted input functions for direct console I/O.
+//
+#define _ALLOW_OLD_VALIDATE_MACROS
+#include <corecrt_internal_stdio_input.h>
+
+using namespace __crt_stdio_input;
+
+template <typename Character>
+static int __cdecl common_cscanf(
+    unsigned __int64 const options,
+    Character const* const format,
+    _locale_t        const locale,
+    va_list          const arglist
+    ) throw()
+{
+    typedef input_processor<
+        Character,
+        console_input_adapter<Character>
+    > processor_type;
+
+    _LocaleUpdate locale_update(locale);
+
+    processor_type processor(
+        console_input_adapter<Character>(),
+        options,
+        format,
+        locale_update.GetLocaleT(),
+        arglist);
+
+    return processor.process();
+}
+
+extern "C" int __cdecl __conio_common_vcscanf(
+    unsigned __int64 const options,
+    char const*      const format,
+    _locale_t        const locale,
+    va_list          const arglist
+    )
+{
+    return common_cscanf(options, format, locale, arglist);
+}
+
+extern "C" int __cdecl __conio_common_vcwscanf(
+    unsigned __int64 const options,
+    wchar_t const*   const format,
+    _locale_t        const locale,
+    va_list          const arglist
+    )
+{
+    return common_cscanf(options, format, locale, arglist);
+}