月下风影

摘要： 1 #include<iostream> 2 #include"std_lib_facilities.h" 3 using namespace std; 4 class practice 5 { 6 public: 7 practice& a(char m) 8 { 9 cout<<m;10 return *this;11 }12 practice& b(char n)13 {14 cout<<n;15 return *this;16 }17 private:18 char... 阅读全文