(VB项目4数组习题答案.docx

一、单选题1.在VB.NET中，一组具有相同名字、不同下标的变量称为____________。A.数组 B.变量 C.同类数据 D.同类变量2.一维数组的大小为______________。A.上界+下界+1 B.上界+下界-1C.上界-下界+1 D.上界-下界-13.数组的存放是按____________存放的。A.数据大小 B.数据类型 C.列 D.行4.数组具有相同的_____________。A.下标 B.类型 C.数值 D.存放地址5.重定义数组大小的语句是______________。A.Dim语句 B.ReDim语句 C.Static 语句 D.Public 语句6.使用Dim A(100) As Integer 语句声明了数组A，其下标的取值范围为____________。A.0~100 B.1~100 C.0~99 D.1~997.若使用Dim A(100) As Integer 语句声明了数组A，下列引用错误的是___________。A.A(0)=2 B.A(1)= -28 C.A(56)= A(-56) D.A(100)=A(0)+A(55)8.如果要对已经声明的数组重新定义大小，并保留原有数据，可使用语句___________。A.Dim B.ReDim C.Dim PreserveD.ReDim Preserve9.对于Integer 类型的静态数组，如果没有赋值，则所有元素的值为____________。A.空 B.0 C.1 D.最大数10.执行重定义数组大小语句ReDim A(UBound(B))后，A数组的上界为______________。A.B数组的上界 B.B数组的上界+1 C.B数组的上界 - 1 D.不确定11.下列数组声明语句中正确的是______________。A.Dim A(9) As Single ={1,2,3,4,5,6,7,8,9,10}B.Dim A() As Single ={1,2,3,4,5,6,7,8,9,10}C.Dim A() As Single ={1,”abc”,”ccc”,4,5,6,7,8,9,10}D.Dim A( , ) As Single ={1,2,3,4,5,6,7,8,9,10}12. 若有声明Dim a(2 ,3) as Integer，则数组a共有元素 个。A．12 B．30 C．16 D．413.下列程序的输出结果是______________。Dim A() As Integer ={1,2,3,4,5,6,7}For i=0 to UBound(A) A(i)= A(i)* A(i)Next iMsgBox (A(i))A.49 B.0 C.不确定 D.程序出错14. 关于数组的声明，正确的是__________。A.Dim a(5) As Integer = {1,2,3,4,5,6}B.Dim a(1,6) As Integer = {1,2,3,4,5,6}C.Dim a( ) As Integer = {1,2,3,4,5,6}D.Dim a(1 to 6) As Integer = {1,2,3,4,5,6}15. 有两个数组s1和s2，要将s1的内容“拷贝”一份给s2，使用（ ）。A.s2=s1B. s2=s1.CopyC.s2=s1.CloneD.s2=s1.All二、填空题 1.数组元素下标下界为_____0_____ ，不能改变；下标上界只能用常数表达式定义。2.定义数组大小时，要想不丢失原有的数据，则必须在ReDim 后边加上关键字__ Preserve _。3.若用Dim A(3,5) As Integer 语句声明数组A ，A数组有 _____24___ 个元素。4.数组的存放是按行存放的，因此要将控制数组第一维的循环变量放在 ___外_______ 循环中。5.若有语句A=Array(1,2,3,4,5,6,7,8)，则A(5)的值是___6_____。三、程序填空题1. 将数组下标为偶数的元素从小到大排序，其他元素不变 Private Sub Button1_Click( ……) Handles Button1.Click Dim a() As Integer = {90, 49, 23, 45, 11, 45, 67, 23, 68, 56} Dim i, j, n, temp As Integer n = UBound(a) For i = 0 To n Label1.Text = Label1.Text a(i) vbCrLf