Putting It Together

Let's put together everything we've learned and look at an application of Object-Oriented Programming concepts.

Consider a scenario in finance. Suppose we're building a trading platform and we need a way to represent a trader who would have characteristics like a name and portfolio value. Here, we can consider each trader as an object and hence can create a class called Trader.

We define the Trader class with two private attributes, name and portfolio_value. The public section of the class contains a constructor that initializes these attributes and a showPortfolio() method that, when called, outputs the name of the trader and their current portfolio value.

We can then create individual instances for different traders with their specific details. Such as 'Carl' having a portfolio value of $15000.00 and 'Jane' having $9800.50. We can do this using the syntax Trader ObjectName(Parameters) as we've learned in the previous sections.

We can then use these objects to call the showPortfolio() method and display the details. This helps us encapsulate the data and operations related to each trader within its own object. As the program grows and more traders are added, handling them becomes easier as they are separate objects.

In conclusion, classes and objects are powerful tools in C++ that allow for clear, organized, and efficient code. They encapsulate related data and functions into individual entities that can interact with each other in complex ways.

With classes and objects, we can build intricate systems, like a trading platform with numerous traders, that are organized and manageable. In each use case, they provide robustness, maintainability, and improved code-readability.

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}

#include <iostream>

using namespace std;

​

// Defining a class 'Trader'

class Trader {

private:

    string name;

    float portfolio_value;

public:

    Trader(string n, float p_v) {

        name = n;

        portfolio_value = p_v;

    }

    void showPortfolio()

    {

        cout<<"Trader: "<<name<<"\nPortfolio value: $"<<portfolio_value<<endl;

    }

};

​

int main() {

​

   /* Creating objects and showcasing usage */

    Trader t1("Carl", 15000.00);

    Trader t2("Jane", 9800.50);

​

    t1.showPortfolio();

    t2.showPortfolio();

​

    return 0;