#include <stdio.h>

int square(int x)
{
	return x*x;
}

int cubic(int x)
{
	return x*x*x;
}

int sum(int N, int (*fp)(int) ) 
{
	int k;
	int summa;
	summa = 0;
	for(k=0; k<=N; k++)
		summa += fp(k);
		
	return summa;
}
int main(int argc, char **argv)
{
	printf("summa blev %i\n", sum(5, square) + sum(4, cubic) );
	printf("hello world\n");
	return 0;
}