1 #include <iostream> 2 #include <string.h> 3 /* run this program using the console pauser or add your own getch, system("pause") or input loop */ 4 using namespace std; 5 class Student 6 { 7 public: 8 void display(); 9 protected: 10 int num; 11 string name; 12 char sex; 13 }; 14 15 void Student::display() 16 { 17 cout<<"num:"<<num<<endl; 18 cout<<"name:"<<name<<endl; 19 cout<<"sex:"<<sex<<endl; 20 } 21 22 class Student1:protected Student 23 { 24 public: 25 void display1(); 26 private: 27 int age; 28 string addr; 29 }; 30 31 void Student1::display1() 32 { 33 cout<<"num:"<<num<<endl; 34 cout<<"name:"<<name<<endl; 35 cout<<"sex:"<<sex<<endl; 36 cout<<"age:"<<age<<endl; 37 cout<<"address:"<<addr<<endl; 38 } 39 40 int main(int argc, char** argv) { 41 Student1 stud1; 42 stud1.display1(); 43 return 0; 44 }