heavily simplified imports and using directives

headers/Park_time.h

@@ -5,12 +5,14 @@
 #include <chrono>
 #include <iostream>
 #include <string>
+#include <ctime>
 #include "data.h"
 
 
 using namespace std::chrono;
 using std::string;
 using std::to_string;
+using std::cout;
 /*
 
 
@@ -21,6 +23,7 @@ class Park_time {
 public:
     Park_time(int c_id, int s_id);
     // Park_time(int c_id, int s_id );
+    ~Park_time();
     int id;
     int customer_id;
     int spot_id;