"Go to the store and buy a loaf of bread. If they have eggs, buy a dozen."

Husband returns with 13 loaves of bread.

Wife asks why he came home with so much bread and no eggs, so he explains to her:

bread = 0;

eggs = 5;

//Buy a loaf

bread = bread + 1;

//If there are eggs

if (eggs >= 2)

bread = bread + 12;

//What to buy

System.out.println("Buy " bread " loaves of bread.");