串的长度是：
A)串中不同字符的个数
B)串中不同字母的个数
C)串中所含字符的个数且字符个数大于零
D)串中所含字符的个数
考点分析：串的概念及特点VB试题：
Function FirProc(z As Integer,y As Integer,z As Integer)
FirProc=2*x+y+3*z
End Function
Function SecProc(x As Integer,y As Integer,z As Integer)
SecProc=FirProc(x,y,z)+x
End Function
Private Sub Command1_Click()
Dim a As Integer,b As Integer,c As Integer
a=2:b=3:c=4
Print SecProc(c,b,a)
End Sub
A) 21 B) 19 C) 17 D) 34
考点分析：函数过程的定义及调用。
相关资料
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