30 lines
684 B
C++
30 lines
684 B
C++
/**
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* @name 策略模式
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* @brief: 封装可互换的算法
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* @note 场景：支付方式选择（信用卡/支付宝）、排序算法切换
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*/
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class PaymentStrategy {
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public:
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virtual void pay(int amount) = 0;
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};
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class CreditCardStrategy : public PaymentStrategy {
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void pay(int amount) override { /* 信用卡支付逻辑 */ }
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};
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class PaymentContext {
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PaymentStrategy* strategy;
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public:
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void setStrategy(PaymentStrategy* s) { strategy = s; }
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void executePayment(int amount) { strategy->pay(amount); }
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};
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// 使用
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int main()
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{
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PaymentContext context;
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context.setStrategy(new CreditCardStrategy());
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context.executePayment(100);
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return 0;
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} |