Дружественные функции - C++ - Ответ 5342275

#include <iostream>
#include <string>
using namespace std;
class Student {
    string surname;
    string name;
    int god_rojd;
    int god_post;
    friend void usl(Student &);
    friend void usl1(Student &);
public:
    Student() {}
    void info();
    void print();
};
void Student::info() {
cout<<"vvedite familiu"<<endl;
cin>>surname;
cout<<"vvedite imya"<<endl;
cin>>name;
cout<<"vvedite god rojdeniya"<<endl;
cin>>god_rojd;
cout<<"vvedite god postupleniya"<<endl;
cin>>god_post;  }   
 
 
void usl() 
    {int gr;
cout<<"vvedite god rojdeniya"<<endl; cin>>gr;
       if (gr==god_rojd) cout<<familiya<<endl;
    }   
void usl1() 
    {int im;
cout<<"vvedite imya"<<endl; cin>>im;
       if (im==name) cout<<familiya<<endl;
    }   
 
 
void Student::print() {
    cout<<endl<<"informaciya o studente"<<endl;
    cout<<surname<<endl<<name<<god_rojd<<endl<<god_post<<endl; }
 
int main () { int n,i;
     cout<<"vvedite kolichestvo studentov: "<<endl;cin>>n;
    Student* student=new Student[n];
    for(i=0;i<n;i++)
    student[i].info();
    for(i=0;i<n;i++)
    student[i].print();
 
    usl();
    usl1();
system("pause"); return 0; }