Exercise: What is the output? void swap_vectors(int *a, int *b, int n) { int *t; t=a; a=b; b=t; print_vector(a,3); print_vector(0,3); } int a[3]={1,2,3}; int b[3]={4,5,6); swap_vectors(a,b,3); print_vector(a,3); print_vector(b,3)