一道例题:
Which of the following two are valid declarations of a char? (Choose Two)
A.char ch = “a”;
B.char ch = ‘\’ ‘;
C.char ch = ‘cafe’;
D.char ch = “cafe”;
E.char ch = ‘\ucafe’;
F.char ch = ‘\u10100’;
G.char ch = (char) true;答案BE
谁能帮解释一下E,‘\ucafe’是什么意思?
没见过这种用法?
Which of the following two are valid declarations of a char? (Choose Two)
A.char ch = “a”;
B.char ch = ‘\’ ‘;
C.char ch = ‘cafe’;
D.char ch = “cafe”;
E.char ch = ‘\ucafe’;
F.char ch = ‘\u10100’;
G.char ch = (char) true;答案BE
谁能帮解释一下E,‘\ucafe’是什么意思?
没见过这种用法?
如\u0000表示空字符。
是十六进制数而已。
写成0x1234看得懂
写成0xcafe就以为是字符串了吗