#include <stdio.h> int main (void) { int i; int j; int k, l; int v = 0; for (k = 0, l = 1; k < 4; k++, l = l*2) { printf ("a%i <= ", k); for (j = 1, i = 0, v = 0; i < 150; i+=10, j++) { printf ("'%i' after %i ns, ", v, i); if ((j % l) == 0) { v = (v + 1) % 2; } } j = j%2; printf ("'%i' after %i ns;nn", v, i); } return 0; }