• 2022-06-09
    判断char型变量c1是否为大写字母的正确表达式是_____。
    A: 'A'<=c1<='Z'
    B: (c1>='A')&(c1<='Z')
    C: (c1>='A')&&(c1<='Z')
    D: ('A'<=c1) AND ('Z'>=c1)
    E: ('A'<=c1)&&('Z'>=c1)