# include <stdio.h>
# include <string.h>
# include <stdlib.h>
typedef struct
{
	int id;
	int     nlessons;
	double *lessons;
}Student;

int main()
{
	Student mystudent;
	int i;
	double average=0.0;
	printf("Doste id \n");
	scanf("%d",&mystudent.id);
	printf("Doste arithmo mathimaton ?\n");
	scanf("%d",&mystudent.nlessons);
	mystudent.lessons=(double *)malloc(mystudent.nlessons * sizeof(double ));
	for(i=0;i<mystudent.nlessons;i++)
	{
		printf("Doste bathmo %d\n",i);
		scanf("%lf",&mystudent.lessons[i]);
		average+=mystudent.lessons[i];
	}
	average/=mystudent.nlessons;
	printf("Mesos oros %lf\n",average);
	free(mystudent.lessons);
	return 0;
}