OOP Copy array

#include <iostream>
#include<stdlib.h>ss
using namespace std;
class CppArray
{
int n;
int a[10];
public:
CppArray()
{
n=0;
}
CppArray operator =(CppArray cp1)
{
n=cp1.n;
for(int i=0;i<n;i++)
{
a[i] = cp1.a[i];
}
cout<<"\nArray copied successfully";
}
int size()
{
return n;
}
CppArray(int s)
{
n=s;
cout<<"\nEnter the numbers";
for(int i=0;i<n;i++)
{
cin>>a[i];
}
}
void display()
{
cout<<"\nThe numbers are\n";
for(int i=0;i<n;i++)
{
cout<<a[i]<<"\t";
}
}
void check_range()
{
int max,min,cnt=0;
cout<<"\n Enter min and max numbers of the range";
cin>>min>>max;

for(int i=0;i<n;i++)
{
if(a[i]>=min && a[i]<=max)
{
cnt++;
cout<<"\t"<<a[i];

}
}
cout<<"\n There are in all"<<cnt<<" numbers in the given range";

}

};

int main() {
int choice,n;
CppArray cp2;

cout<<"\nEnter size of array";
cin>>n;
CppArray cp1(n);

do
{
cout<<"\n1)Display Array\n2)Check Size\n3)Check Range\n4)Copy Array\nEnter your choice";
cin>>choice;

switch(choice)
{

case 1:

cp1.display();
break;
case 2:
cout<<"Size of the array is "<<cp1.size();
break;

case 3:
cp1.check_range();
break;
case 4:
cp2=cp1;
cout<<"\nThe copied array is\n";
cp2.display();
break;
case 5:
exit(0);
}

}while(choice!=5);

return 0;
}