// my first pointer
#include <iostream>
using namespace std;

int main ()
{

int firstvalue, secondvalue;
int * mypointer;

mypointer = &firstvalue;
*mypointer = 10;

mypointer = &secondvalue;
*mypointer = 20;

cout << "firstvalue is " << firstvalue << endl;
cout << "secondvalue is " << secondvalue << endl;

return 0;

}
