假设下面的每一个例子都是某个完整程序的一部分,它们每个将输出什么结果?
a.printf ("Baa Baa Black Sheep.");
printf ("Have you any wool?\n");
b.printf ("Begone!\n0 creature of lard!");
c.printf ("What?\nNo/nBonzo?\n");
d.int num;
num = 2;
printf ("%d + %d = %d", num, num, num + num);