设有以下语句：
char x=3,y=6,2;
z=x^y＜＜2；
则z的二进制值是
A) 00010100
B) 00011011
C) 00011100
D) 00011000
参考答案：B
解析： 本题考查两个位运算符。按位异或运算符"^"是双目运算符，其功能是参与运算的两个数对应的二进位相异或，当两对应的二进位相异或时，结果为1。左移运算符"＜＜"是双目运算符，其功能是把"＜＜"左边的运算数的各二进位全部左移若干位，由"＜＜"右边的数指定移动的位数，高位丢弃，低位补0，并且"＜＜"运算符的优先级高于"^"。
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| Once, in a small village, lived a family with eight children. Two of the children loved 1 very much, but the family was so poor that it was impossible to send 2 of them to study at the art college at the same time. After many discussions, the two boys finally 3 a plan. They would toss (抛) a coin. The loser would 4 down into the mines (煤矿) and, with his earnings (赚得的钱), 5 his brother studying at the college. Then, when the brother who won the toss finished his studies, after four years, he would support 6 brother studying at the college. James won the toss and Jack went down into the mines. James worked with all his heart and his paintings were much 7 than those of most of his teachers, and by the time he 8 , he was beginning to make a lot of money for his paintings. 9 James returned, the family held a big dinner for his great success. Soon after the meal began, James 10 up from his seat to drink a toast to his dear 11 . He said, "Jack, now you can go to the art college and your 12 will come true. I will take care of you." But Jack said 13 , "Brother, the four years in the mines has done too much to my hands, so it' s too 14 . Now I can' t even hold a glass." To show his great love and respect, James drew his brother' s hands with 15 towards the sky. He called his drawing "The Praying Hands", which became very famous years later. | ||||
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