[1/2] bindings: cxx: examples: consistently use () for functions taking no args

diff --git a/bindings/cxx/examples/async_watch_line_value.cpp b/bindings/cxx/examples/async_watch_line_value.cpp
index d8317a5..9ea9763 100644
--- a/bindings/cxx/examples/async_watch_line_value.cpp
+++ b/bindings/cxx/examples/async_watch_line_value.cpp
@@ -31,7 +31,7 @@  const char* edge_event_type_str(const ::gpiod::edge_event &event)
 
 } /* namespace */
 
-int main(void)
+int main()
 {
 	/*
 	 * Assume a button connecting the pin to ground, so pull it up and
diff --git a/bindings/cxx/examples/find_line_by_name.cpp b/bindings/cxx/examples/find_line_by_name.cpp
index 983251a..7b56e69 100644
--- a/bindings/cxx/examples/find_line_by_name.cpp
+++ b/bindings/cxx/examples/find_line_by_name.cpp
@@ -15,7 +15,7 @@  const ::std::string line_name = "GPIO19";
 
 } /* namespace */
 
-int main(void)
+int main()
 {
 	/*
 	 * Names are not guaranteed unique, so this finds the first line with
diff --git a/bindings/cxx/examples/get_chip_info.cpp b/bindings/cxx/examples/get_chip_info.cpp
index 073a6c3..2bf26f0 100644
--- a/bindings/cxx/examples/get_chip_info.cpp
+++ b/bindings/cxx/examples/get_chip_info.cpp
@@ -15,7 +15,7 @@  const ::std::filesystem::path chip_path("/dev/gpiochip0");
 
 } /* namespace */
 
-int main(void)
+int main()
 {
 	::gpiod::chip chip(chip_path);
 	auto info = chip.get_info();
diff --git a/bindings/cxx/examples/get_line_info.cpp b/bindings/cxx/examples/get_line_info.cpp
index f2f071e..7d517af 100644
--- a/bindings/cxx/examples/get_line_info.cpp
+++ b/bindings/cxx/examples/get_line_info.cpp
@@ -17,7 +17,7 @@  const ::gpiod::line::offset line_offset = 3;
 
 } /* namespace */
 
-int main(void)
+int main()
 {
 	auto chip = ::gpiod::chip(chip_path);
 	auto info = chip.get_line_info(line_offset);
diff --git a/bindings/cxx/examples/get_line_value.cpp b/bindings/cxx/examples/get_line_value.cpp
index a14d7e4..fe4f52e 100644
--- a/bindings/cxx/examples/get_line_value.cpp
+++ b/bindings/cxx/examples/get_line_value.cpp
@@ -16,7 +16,7 @@  const ::gpiod::line::offset line_offset = 5;
 
 } /* namespace */
 
-int main(void)
+int main()
 {
 	auto request = ::gpiod::chip(chip_path)
 			       .prepare_request()
diff --git a/bindings/cxx/examples/get_multiple_line_values.cpp b/bindings/cxx/examples/get_multiple_line_values.cpp
index d1f22e7..cbd5395 100644
--- a/bindings/cxx/examples/get_multiple_line_values.cpp
+++ b/bindings/cxx/examples/get_multiple_line_values.cpp
@@ -15,7 +15,7 @@  const ::gpiod::line::offsets line_offsets = { 5, 3, 7 };
 
 } /* namespace */
 
-int main(void)
+int main()
 {
 	auto request = ::gpiod::chip(chip_path)
 			       .prepare_request()
diff --git a/bindings/cxx/examples/reconfigure_input_to_output.cpp b/bindings/cxx/examples/reconfigure_input_to_output.cpp
index 896c812..d55eaf5 100644
--- a/bindings/cxx/examples/reconfigure_input_to_output.cpp
+++ b/bindings/cxx/examples/reconfigure_input_to_output.cpp
@@ -19,7 +19,7 @@  const ::gpiod::line::offset line_offset = 5;
 
 } /* namespace */
 
-int main(void)
+int main()
 {
 	/* request the line initially as an input */
 	auto request = ::gpiod::chip(chip_path)
diff --git a/bindings/cxx/examples/toggle_line_value.cpp b/bindings/cxx/examples/toggle_line_value.cpp
index a17b43b..3dbdb71 100644
--- a/bindings/cxx/examples/toggle_line_value.cpp
+++ b/bindings/cxx/examples/toggle_line_value.cpp
@@ -25,7 +25,7 @@  const ::gpiod::line::offset line_offset = 5;
 
 } /* namespace */
 
-int main(void)
+int main()
 {
 	::gpiod::line::value value = ::gpiod::line::value::ACTIVE;
 
diff --git a/bindings/cxx/examples/toggle_multiple_line_values.cpp b/bindings/cxx/examples/toggle_multiple_line_values.cpp
index a5b84bf..df55313 100644
--- a/bindings/cxx/examples/toggle_multiple_line_values.cpp
+++ b/bindings/cxx/examples/toggle_multiple_line_values.cpp
@@ -37,7 +37,7 @@  void print_values(::gpiod::line::offsets const &offsets,
 
 } /* namespace */
 
-int main(void)
+int main()
 {
 	::gpiod::line::values values = { ::gpiod::line::value::ACTIVE,
 					 ::gpiod::line::value::ACTIVE,
diff --git a/bindings/cxx/examples/watch_line_info.cpp b/bindings/cxx/examples/watch_line_info.cpp
index 414fb06..6d55500 100644
--- a/bindings/cxx/examples/watch_line_info.cpp
+++ b/bindings/cxx/examples/watch_line_info.cpp
@@ -30,7 +30,7 @@  const char *event_type(const ::gpiod::info_event &event)
 
 } /* namespace */
 
-int main(void)
+int main()
 {
 	::gpiod::chip chip(chip_path);
 
diff --git a/bindings/cxx/examples/watch_line_rising.cpp b/bindings/cxx/examples/watch_line_rising.cpp
index aa3be9c..33e4f01 100644
--- a/bindings/cxx/examples/watch_line_rising.cpp
+++ b/bindings/cxx/examples/watch_line_rising.cpp
@@ -29,7 +29,7 @@  const char *edge_event_type_str(const ::gpiod::edge_event &event)
 
 } /* namespace */
 
-int main(void)
+int main()
 {
 	auto request =
 		::gpiod::chip(chip_path)
diff --git a/bindings/cxx/examples/watch_line_value.cpp b/bindings/cxx/examples/watch_line_value.cpp
index 5055789..ebc7fe7 100644
--- a/bindings/cxx/examples/watch_line_value.cpp
+++ b/bindings/cxx/examples/watch_line_value.cpp
@@ -29,7 +29,7 @@  const char *edge_event_type_str(const ::gpiod::edge_event &event)
 
 } /* namespace */
 
-int main(void)
+int main()
 {
 	/*
 	 * Assume a button connecting the pin to ground, so pull it up and
diff --git a/bindings/cxx/examples/watch_multiple_line_values.cpp b/bindings/cxx/examples/watch_multiple_line_values.cpp
index 42b7213..fb71fb2 100644
--- a/bindings/cxx/examples/watch_multiple_line_values.cpp
+++ b/bindings/cxx/examples/watch_multiple_line_values.cpp
@@ -28,7 +28,7 @@  const char *edge_event_type_str(const ::gpiod::edge_event &event)
 
 } /* namespace */
 
-int main(void)
+int main()
 {
 	auto request =
 		::gpiod::chip(chip_path)