vb 程序设计 设变量s的值为“ABCDEFGHIJK” 编程求下列函数

vb 程序设计 设变量s的值为“ABCDEFGHIJK” 编程求下列函数

编程很简单啊，我想应该是求这几个函数的执行结果吧？
下面是结果
left(s,4)=ABCD
Right (s,4)=HIJK
mid(s,3,4)=CDEF
mid (s,4 )=CDEFGHIJK
len (s)=11
instr (s,"EFG") =5
Lcase(Right (s,5))=ghijk
len (mid(s,3))=9

ABCDHIJKCDEFDEFGHIJK 115ghijk9

Sub Command1_Click()
dim s as string,strRes as string,intRes as integer
s="ABCDEFGHIJK"
strRes=left(s,4)
print strRes
strRes=left(s,4)
print strRes
strRes=Right(s,4)
print strRes
strRes=mid(s,3,4)
print strRes
intRes=len(s)
print intRes
intRes=instr(s,"EFG")
print intRes
strRes=lcase(Right(s,5))
print strRes
intRes=len(mid(s,3))
print intRes
End sub