#include <iostream>

using namespace std;
struct pool_t
{
int *data;
int size, tail;
};
void push (pool_t &pool, int val)
{
pool.tail=(pool.tail+1)%pool.size;
pool.data[pool.tail]=val;
}
int main()
{
pool_t pool={new int[5],5,2};
for (int i=0;i<10;++i)
push(pool,i);
for (int i=0;i<pool.size;++i)
cout«pool.data[i]«" ";

return 0;
}
19