#include "test-harness.h" vector a = { 1, 0, 0 }; vector b = { 0, 1, 0 }; vector c = { 0, 0, 1 }; int main () { vector v = a × b; if (v != c) { printf ("cross product failed\n"); return 1; }; if (v • c != [1, 1, 1]) { printf ("dot product failed\n"); return 1; } return 0; }