题目
There is time_the changes.
A. for
B. to
C. in
第1题
A、(ch>='0'&&ch<='f')||(ch>='0'&&ch<='F')
B、(ch>='0'&&ch<='9')&&(ch>='a'&&ch<='f')||(ch>='A'&&ch<='F')
C、(ch>='0'&&ch<='9')||(ch>='a'&&ch<='f')||(ch>='A'&&ch<='F')
D、(ch>='0'&&ch<='9')||(ch>='a'&&ch<='f')&&(ch>='A'&&ch<='F')
第3题
A.if('z'>=ch>='a') ch=ch-32;
B.if(ch>='a'&&ch<='z') ch=ch-32;
C.ch=('z'>=ch>='a')?ch-32:ch;
D.ch=(ch>='a'&&ch<='z')?ch:ch-32;
第4题
A.ch >= 'A' && ch <= 'Z' || ch >= 'a' && ch <= 'z'
B.ch >= A && ch <= Z || ch >= a && ch <= z
C.'A' <= ch <= 'Z' || 'a' <= ch <= 'z'
D.A <= ch <= Z || a <= ch <= z
第5题
A.'a'<=ch<='z'
B.(ch>=a)&&(ch<=z)
C.(ch>='a')&&(ch<='z')
D.(ch>='a') || (ch<='z')
第7题
A.ch >= 'A' && ch <='Z'
B.ch <= 'Z' && ch >= 'A'
C.'A' <= ch <= 'Z'
D.ch >= 'A' || ch <= 'Z'
E.ch >='A' AND ch <='Z'
F.ch BETWEEN 'A' AND 'Z"
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