There are some new books in the school library．They are （）books.

include ＜stdio．h＞ main() { int a=0，b，c=0，i； for(i=0；i＜=4；i+=2) {a+=i； b=i+1： c+=b： } printf('a=%d n'，a)； printf('C=%d n'，c)； } 程序运行结果为： 点击查看答案

The result made me（）．It was not half so good as I had expected.

A．disappointing
B．disappointed
C．disappoint
D．be disappointed

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