题目内容
(请给出正确答案)
[单选题]
判断char类型的变量c1是否为数字字符的正确表达式为()。
A.(c1>=0)&&(c1<=9)
B.(c1>=’0’)&&(c1<=’9’)
C.’0’<=c1<=’9’
D.(c1>=’0’)||(c1<=’9’)
查看答案
如果结果不匹配,请 联系老师 获取答案
A.(c1>=0)&&(c1<=9)
B.(c1>=’0’)&&(c1<=’9’)
C.’0’<=c1<=’9’
D.(c1>=’0’)||(c1<=’9’)
A.'a'<=c1<='z'
B.(c1>='a')&&(c1<='z')
C.(c1>=a)&&(c1<=z)
D.(‘a'<=c1)||('z'>=c1)
A.’a’<=c1<=’z’
B.(c1>=&&(c1<=’z’)
C.(’a’>=c1)‖(’z’<=c1)
E.(c1>=’a’)&&(c1<=’z’)
A.(ch>=0) &&(ch<=9)
B.('0'<=ch<='9')
C.(ch>='0') && (ch<='9')
D.(ch>='0'&&ch<='9')
判断char型变量ch是否为大写字母的正确表达式是( )。
(A)'A'<=ch<='Z' (B)(ch>='A')&fch<='Z')
(C)(ch>='A')&&(ch<='Z') (D)('A'<=ch)AND('Z'>=ch)
char c1,c2;
scanf("%4c%4c",&c1,&c2);