#include <stdio.h>

int main(void)
{
int i;
float a[7] = {2.10, 3.21, 5.43, 6.54, 7.65, 8.76, 9.87};
float *a_p = &a[1];
for(i = 0;i < 3;printf("%.2f ",*a_p) , a_p += 2 , i++);
return 0;
}

3.21 6.54 8.76