//arrays

 type	array name  	and subscript

 int	first_array[9 ];	declares an integer array of 9 elements;
 
	- how can you initialize:

 int	first_array[9 ]= {3, 7, 10, 17, 21, 48, 49, 59, 97};

- how to fill it with values

int main()
     {
        int first_array[9];
        cout << " - give the value for the first_array[  ] : ";
        int i;
         for ( i=0; i<9; i++)  
         {
           
           cin >> first_array[i];
        }
        for (i = 0; i<9; i++)
          cout << i << ": " << first_array[i] <<endl;

     return 0;
 }

***********
	- important:	 - for an array, the first position is always: 0!!!
		- if you want to have 9 values only, it means that you will fill it from 0 to 8;
		- so, the last one is at the 8th position! BE AVARE OF THIS!!!
		- if your array, as here  has  9 values only,
		  does not mean, that you cannot ASK YOUR program, to tell you the value 
		  at the 21th position!!! HE WILL "TELL YOU"!!!

*********************************************************************************

#include <iostream>

using namespace std;

int main()
{

   //long hosszutomb[25];
   //int egesztomb[5]={3, 21, 8, 27,48};
    
   const int max=30;
   int v[max];
   int n;

   do
   {
     cout << "how many data between: (1<=n<= "<<max<< ") " << endl;
     cin>>n;

     if(n<=1 || n>max)
     cout<<"not a good value, tell again:  "<<endl;
   }while(n<=1 || n>max );		

    cout << " the values are:  " << endl;

    for(int i=0; i<n; ++i)
    {
        cout<<i+1<<". elem: ";
        cin>> v[i];
    }
// the values in the array:

    for(int i=0; i<n-1; ++i)
    cout<<v[i]<<", ";            /* only one row belongs to the for cycle, the next one doesn't...*/
    cout<<v[n-1]<<";"<<endl;

    return 0;
}