Move all C++ tests to cpp.

cpp/boost_chrono_process_cpu.cpp

@@ -0,0 +1,36 @@
+#include <iostream>
+#include <exception>
+#include <string>
+#include <chrono>
+#include <thread>
+
+#include <boost/chrono/process_cpu_clocks.hpp>
+
+
+int main ( void )
+{try{
+
+	boost::chrono::process_cpu_clock clock;
+	boost::chrono::process_cpu_clock::time_point b = clock.now();
+	std::this_thread::sleep_for( std::chrono::seconds( 2 ) );
+	boost::chrono::process_cpu_clock::time_point e = clock.now();
+	boost::chrono::process_cpu_clock::duration d = e - b;
+
+	auto times = d.count(); 	
+	std::cout << times.real / 1e+9 << std::endl;
+	std::cout << times.user / 1e+9 << std::endl;
+	std::cout << times.system / 1e+9 << std::endl;
+
+	return 0;
+}
+catch ( const std::exception& e )
+{
+	std::cerr << std::endl
+			<< "std::exception(\"" << e.what() << "\")." << std::endl;
+}
+catch ( ... )
+{
+	std::cerr  << std::endl
+			<< "unknown exception." << std::endl;
+}}
+