#include <stdio.h>

float dot_product(float v1[3], float v2[3]) //add this
{
    return (v1[0] * v2[0]) + (v1[1] * v2[1]) + (v1[2] * v2[2]);
}

int main(void)
{
	float vec_a[3];
	float vec_b[3];

	vec_a[0] = 1.5f;
	vec_a[1] = 2.5f;
	vec_a[2] = 3.5f;
	vec_b[0] = 4.0f;
	vec_b[1] = 5.0f;
	vec_b[2] = 6.0f;

	printf("%f\n", dot_product(vec_a, vec_b));

	return 0;
}