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C++ program to implement the array of objects and pointer pointing to it:
#include<iostream>
#include<string>
using namespace std;
class student{
string name;
int rollno;
public:
void initialize(string n,int r);
void display();
};
void student::initialize(string n,int r){
name=n;
rollno=r;
}
void student::display(){
cout<<"Student Details : \n";
cout<<"Roll No : "<<rollno<<endl;
cout<<"Name : "<<name<<endl;;
}
int main()
{
int n,i;
string nam;
int roll;
cout<<"Enter the no of students...";
cin>>n;
student s[n];
student *ptr,*p[n];
cout<<"\nEnter the student details one by one..";
for(i=0;i<n;i++){
cout<<"\nEnter the roll no followed by name ";
cin>>roll>>nam;
s[i].initialize(nam,roll);
p[i]=&s[i];
}
cout<<"\nDisplaying the Student database by using a single pointer to an array of objects";
ptr=s;
for(i=0;i<n;i++){
ptr->display();
ptr++;
}
cout<<"\nDisplaying the Student database by using array of pointers\n";
for(i=0;i<n;i++){
p[i]->display();
}
return 0;
}
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