【单项选择题】
字符串,str="welcometoBeijing"进行下列操作处理,描述结果错误的是()
A、A.str.substring(4,9)返回值是"onet"
B、B.str.length的返回值是"18"
C、C.str.charAt("4")返回值是"e"
D、D.str.toUpperCase()的返回值是"welcometoBeijing"
A、A.str.substring(4,9)返回值是"onet"
B、B.str.length的返回值是"18"
C、C.str.charAt("4")返回值是"e"
D、D.str.toUpperCase()的返回值是"welcometoBeijing"
A、string str="Tom\’s Living Room"; B、string str="Tom’s Living Room"; C、string str("Tom’s Living Room"); D、string str("Tom"s Living Room");
A、A.dim str as string B、B.dim str as string(256) C、C.dim str as string[256] D、D.dim str as string*256