should be it

external/duckdb/examples/embedded-c++/main.cpp

@@ -0,0 +1,14 @@
+#include "duckdb.hpp"
+
+using namespace duckdb;
+
+int main() {
+	DuckDB db(nullptr);
+
+	Connection con(db);
+
+	con.Query("CREATE TABLE integers(i INTEGER)");
+	con.Query("INSERT INTO integers VALUES (3)");
+	auto result = con.Query("SELECT * FROM integers");
+	result->Print();
+}