#include <stdio.h>
void ampersand( int n, int &k );
int main()
{
int n = 5;
int k = 10;
ampersand( n, k );
printf( "n=%d &k=%d\n", n, k );
return 0;
}
void ampersand( int n, int &k )
{
k -= 5;
--n;
}