#include <stdio.h>

void f (int a[10]);

int main()
{
   int a[10] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
   
   f(a);
   f(a);

   printf("%d\n", a[3]);

   return 0;
}

void f (int a[10])
{
   printf("%d\n", a[3]);
   a[3] += 900;
}