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diff --git a/CM2005 Object Oriented Programming/Topic 2/2.1.14/main.cpp b/CM2005 Object Oriented Programming/Topic 2/2.1.14/main.cpp
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+++ b/CM2005 Object Oriented Programming/Topic 2/2.1.14/main.cpp	
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+#include <iostream>
+#include <string>
+#include <vector>
+
+int main()
+{
+    enum class OrderBookType{bid, ask};
+    
+    //double price = 5319.450228;
+    //double amount = 0.00020075;
+    //std::string timestamp{"2020/03/17 17:01:24.884492"};
+    //std::string product{"BTC/USDT"};
+    //std::string orderType{"bid"};
+    //enum class OrderBookType{bid, ask};
+    //OrderBookType orderType = OrderBookType::ask;
+
+    std::vector<double> prices;
+    std::vector<double> amounts;
+    std::vector<std::string> timestamps;
+    std::vector<std::string> products;
+    std::vector<OrderBookType> orderTypes;
+
+    prices.push_back(5000.01);
+    amounts.push_back(0.001);
+    timestamps.push_back("2020/03/17 17:01:24.884492");
+    products.push_back("BTC/USDT");
+    orderTypes.push_back(OrderBookType::bid);
+
+    prices.push_back(5000.03);
+    amounts.push_back(0.003);
+    timestamps.push_back("2020/03/17 17:01:24.884492");
+    products.push_back("BTC/USDT");
+    orderTypes.push_back(OrderBookType::bid);
+
+    std::cout << "prices: " << prices[0] << std::endl;
+    std::cout << "prices: " << prices[1] << std::endl;
+
+    return 0;
+}
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