Implementing the function method using c, some sample codes are showed below:

typedef struct{ double *vector; int count; int length; }Vector;

Vector create_vector(int length){ Vector vec; vec.vector = (int*)malloc(sizeof(int)*length); if (vec.vector == NULL){ vec.length = 0; vec.count =0; return vec; }vec.count =0; vec.length = length; }

Vector copy(Vector vec) {

}

/* Copies a range from a vector to a new vector and returns the new vector. The count and length should be equal to the number of elements copied. Remember to check for invalid operations: to less than from to less than zero from greater than or equal to count */ Vector copy_range(Vector vec, int from, int to) { }

/* Writes zeros to the elements of a vector and sets the count to zero. */