判断 char 型变量 c1 是否是小写字母的正确表达式是:
A、'a'<=c1<='z';
B、(c1>='A')&&(c1<='z');
C、('a'>=c1)||('z'<=c1);
D、(c1>='a')&&(c1<='z')
发布时间:2024-09-29 14:47:37
A、'a'<=c1<='z';
B、(c1>='A')&&(c1<='z');
C、('a'>=c1)||('z'<=c1);
D、(c1>='a')&&(c1<='z')