很基础的c++题，来自学c小fw的提问～

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  1. 你看它的规律，这时候你去百度ASCII对照表，每一个字符改变前后的ASCII码都相差4位，这就找到解题思路了，只要每个字符都加4就可以转换成对应的字符了
char c1 = 'C',c2 = 'h', c3 = 'i', c4 = 'n', c5 = 'a';
c1 = c1 + 4;
c2 = c2 + 4;
c3 = c3 + 4;
c4 = c4 + 4;
c5 = c5 + 4;
cout << c1 << c2 << c3 << c4 << c5 << endl;