text: #include <iostream>
  
  enum Protocol {
      TCP = 5,
      UDP = 10
  };
  
  int main() {
  
      Protocol t = TCP;
  
      if(t == 5) std::cout << "is TCP" << std::endl;
  
      if(t == TCP) std::cout << "is TCP too" << std::endl;
  }
  
  // 运行代码 make run c=7 e=1
  
  // 运行成功