代碼如下:

#include <iostream> #include <string>using namespace std;//銀行工作人員 class BankWorker { public:void saveService(){cout << "辦理存款業(yè)務(wù)" << endl;}void payService(){cout << "辦理支付業(yè)務(wù)" << endl;}void transferService(){cout << "辦理轉(zhuǎn)賬業(yè)務(wù)" << endl;} };//中層模塊 void doSaveBussiness(BankWorker *worker) {worker->saveService(); }void doPayBussiness(BankWorker *worker) {worker->payService(); }void doTransferBussiness(BankWorker *worker) {worker->transferService(); }void test01() {BankWorker *worker = new BankWorker;doSaveBussiness(worker);doPayBussiness(worker);doTransferBussiness(worker); }int main() {test01();return 0; }

依賴倒轉(zhuǎn)原則

代碼如下:

#include <iostream> #include <string>using namespace std;class AbstractWorker { public:virtual void doBusiness() = 0; };class SaveBankWorker :public AbstractWorker { public:virtual void doBusiness(){cout << "辦理存款業(yè)務(wù)" << endl;} };class PayBankWorker :public AbstractWorker { public:virtual void doBusiness(){cout << "辦理支付業(yè)務(wù)" << endl;} };class TransferBankWorker :public AbstractWorker { public:virtual void doBusiness(){cout << "辦理轉(zhuǎn)賬業(yè)務(wù)" << endl;} };//中層模塊 void doNewBusiness(AbstractWorker *worker) {worker->doBusiness();delete worker; }void test01() {doNewBusiness(new TransferBankWorker);doNewBusiness(new PayBankWorker);doNewBusiness(new SaveBankWorker); }int main() {test01();return 0; }

測試結(jié)果:

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