有以下程序段： int x=3； do printf("%d",x-=2)；_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题单项选择题

有以下程序段：
int x=3；
do

printf("%d",x-=2)；

while(!(--x))；
其输出结果是 ______ 。

A．1

B．3 0

C．1 -2

D．死循环

答案

参考答案：C

解析：[评析]本题中循环执行了两次，第一次，执行完printf语句后，x=1，而-x是先自减后执行语句，所以(!(-x))的值为非零，所以又执行了一次。第二次x的值为-2，-x的值为-3，求非后，值为0，跳出循环。

完形填空

The clock in the old building in front of Max showed six o'clock. As the clock began   1  , he noticed a tall man with a bag walking to him. 2 turned around, looked at the clock, and then moved his steps   3  . Max walked faster as well. Miss Fritz invited him for dinner. He didn't want to be 4 .
"I’m glad you can come," Miss Fritz said. "I've 5 a lovely cake for us. " She pointed Max to a chair. "Good thing I prepared just now. A surprise visitor just left. " "Who 6  you?" Max asked.
"A teacher 7 a school for the deaf. He was totally deaf （耳聋的）himself. What a poor man! But he could 8  the shape of my mouth perfectly. He wrote down   9   he wanted to tell me." "Why was he here?"
"Well, the   10  needs more money. I was glad to help out. I got    11   money from the bank so I was able to give him five hundred   12  ." "Did he just leave? Was he a   13  man with a bag?"
"Yes."
"We'd better 14 the police. I don't think that man is honest. I know for sure   15   was not totally deaf," How did Max find it out?

问答题简答题

我厂压滤机的优点？