How do I implement the strategy pattern in financial systems with C++?

The strategy pattern is a behavioral design pattern that enables selecting an algorithm's behavior at runtime. In financial systems, this pattern can be used to encapsulate various financial strategies, such as investment strategies, computation of interest, and risk assessment, allowing for greater flexibility and easier maintenance.

Here's how to implement the strategy pattern in a financial system using C++.


#include 
#include 

// Strategy Interface
class InvestmentStrategy {
public:
    virtual void invest() = 0;
};

// Concrete Strategy A
class AggressiveStrategy : public InvestmentStrategy {
public:
    void invest() override {
        std::cout << "Investing aggressively in stocks." << std::endl;
    }
};

// Concrete Strategy B
class ConservativeStrategy : public InvestmentStrategy {
public:
    void invest() override {
        std::cout << "Investing conservatively in bonds." << std::endl;
    }
};

// Context
class Investor {
private:
    std::unique_ptr strategy;
public:
    void setStrategy(std::unique_ptr newStrategy) {
        strategy = std::move(newStrategy);
    }
    
    void invest() {
        if (strategy) {
            strategy->invest();
        }
    }
};

// Main function demonstrating the strategy pattern
int main() {
    Investor investor;
    
    // Using aggressive strategy
    investor.setStrategy(std::make_unique());
    investor.invest();
    
    // Switching to conservative strategy
    investor.setStrategy(std::make_unique());
    investor.invest();
    
    return 0;
}

How do I implement the strategy pattern in financial systems with C++?

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How do I implement the strategy pattern in financial systems with C++?

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