填空题s=”this is the mainstring”,sub=”string”,strindex(s,sub)是()

填空题
s=”this is the mainstring”,sub=”string”,strindex(s,sub)是()

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在窗体上画一个命令按钮和两上文体,其名称分别为 Command1 、 Text1 和 Text2 ,然后编写如下程序:Dim S1 As String, S2 As StringPrivate Sub Form_Load()Text1. Text=””Text2. Text=””End SubPrivate Sub Text1_KeyDown(KeyCode As Integer, Shift As Integer)S2=s2 Chr(KeyCode)End SubPrivate Sub Text1_KeyPress(KeyAscii As Integer)S1=S1 chr(KeyAscii)End SubPrivate Sub Command1_Click()Text1.Text=S2Text2.Text=S1S1=""S2=""End Sub程序运行后,在Text1中输入"abc",然后单击命令按钮,在文本框 Text1 和 Text2 中显示的内容分别为( )。A.abc 和 ABCB.abc 和 abcC.ABC 和 abcD.ABC 和 ABC

下列程序的执行结果为Private Sub Command1_Click()Dim s1 As String, s2 As Strings1= "abcd"Call Transfer(s1, s2)Print s2End SubPrivate Sub Transfer (ByVal xstr As String, ystr As String)Dim tempstr As Stringi=Len(xstr)Do While i =1tempstr=tempstr + Mid(xstr, i, 1)i=i - 1Loopystr=te mpstrEnd Sub( )。A.dcbaB.abdcC.abcdD.dabc

单击窗体时,下列程序的执行结果是Private Sub Invert(ByVal xstr As String, ystr As String)Dim tempstr As StringDim I As IntegerI=Len(xstr)Do While I =1tempstr=tempstr + Mid(xstr, I, 1)I=I - 1Loopystr=tempstrEnd SubPrivate Sub Form_Click()Dim s1 As String, s2 As Strings1= "abcdef"Invert s1, s2Print s2End Sub( )。A.abcdefB.afbecdC.fedcbaD.defabc

( 30 )下面程序的输出结果是Private Sub Command1_Click()ch$= ” ABCDEF ”proc chPrint chEnd SubPrivate Sub proc(ch As String)S= ””For k=Len(ch) To 1 Step-1s=sMid(ch,k,1)Next kch=sEnd SubA ) ABCDEFB ) FEDCBAC ) AD ) F

在窗体上画一个命令按钮和两个文本框,其名称分别为Command1、Text1和Text2,然后编写如下程序: Dim S1 As String,S2 As String Private Sub Form_Load() Text1.Text="" Text2.Text="" End Sub Private Sub Text1_KeyDown(KeyCode As Integer,Shift As Integer) S2=S2 Chr(Keycode) End Sub Private Sub Text1_KeyPress(KeyAscii As Integer) S1=S1 Chr(KeyAscii) End Sub Private Sub Command1_Click() Text1.Text=S2 Text2.Text=S1 S1="" S2="" End Sub 程序运行后,在Text1中输入“abc”,然后单击命令按钮,在文本框Text1和Text2中显示的内容分别为______。A.abc和ABCB.abc和abeC.ABC和abcD.ABC和ABC

下列过程说明合法的是( ) A、Sub S1(ByVal n!())B、Sub S1(n!) as IntegerC、 Function S1%(S1%)D、 Function S1(ByVal n!)

以下程序用于求S=1+3+32+33+…+310的值。Private Sub Commandl_Click()S=1T=1ForI=1 To 10T=______S=S+TNextIPrint"S=";SEnd Sub

设窗体上有一个文本框Text1和一个命令按钮Command1,并有下列事件过程: Private Sub Command1_Click() Dim s As String,Ch As String s="" For k=1 To Len(Text1) ch=Mid(Text1,k,1) s=ch+s Next k Text1.Text=s End Sub 程序执行时,在文本框中输入“Basic”,然后单击命令按钮,则Text1中显示的是( )。A.BasicB.cisaBC.BASICD.CISAB

下面子过程语句说明合法的是A.Sub f1(s1 As String*8)B.Sub f1(n()As Integer)As IntegerC.Function f1(f1 As Integer)As IntegerD.Function f1(By Val n As Integer)

假定有以下函数过程: Function Fun(S As String)As String Dimsl As String Fori=1 To Len(S) s1=UCase(Mid(S,i,1))+s1 Nexti Fun=s1 End Function 在窗体上画一个命令按钮,然后编写如下事件过程: Private Sub Commandl_Click() DimStrl As String,Str2 As StrA.abcdefgB.ABCDEFGC.gfedcbaD.GFEDCBA

编写如下事件过程: Private sub sub1 (ByVal x1 As String, y1 As String) Dim xt As String Dim i As Integer i = Len(x1) Do While i>= 1 xt = xt + Mid(x1, i, 1) i=i-1 Loop y1 = xt End Sub Private Sub Form. Click() Dim s1 As String, s2 As String s1= "teacher" sub1 s1, s2 Print s2 End Sub 程序运行后,单击窗体,则窗体上显示的内容是A.rehcaetB.tahreeeC.themeeD.eerthea

写出程序运行的结果Public class BasePublic virtual string Hello() {return “Base”;}Public class Sub:BasePublic override string Hello() {return “Sub”;}1. Base b = new Base(); b.Hello;2. Sub s = new Sub(); s.Hello;3. Base b = new Sub (); b.Hello;4. Sub s = new Base(); s.Hello;

下面程序的输出结果是。 Private Sub Commandl_Click ch$=“ABCDEF” proc ch:Print ch End Sub Private Sub proc(ch As Stnng) s=“” For k=Len(ch) TO 1 Step -1 s=sMid(ch,k,1) Next k ch=s End Sub A.ABCDEF B.FEDCBA C.A D.F

执行下面的程序,消息框里显示的结果是( )。Private Sub Form_Click()Dim Str As String,S As String,k As IntegerS=StrFor k=Len(Str) To 1 Step -1S=S (Mid(Str,k,1)Next kEnd Sub

单击窗体时,下列程序的执行结果是 Private Sub Invert(By Val xstr As String,ystr As String) Dim tempstr AS String Dim I AS Integer I=Len(xstr) Do While I>=1 tempstr=tempstr + Mid(xstr,I,1) I=I - 1 Loop ystr=tempStr End Sub Private Sub Form_Click( ) Dim s1 As String,s2 As String S1="abcdef" Invert S1,S2 Print S2 End SubA.abcdefB.afbecdC.fedcbaD.defabc

下列程序的执行结果为 Private Sub Command1_C1ick( ) Dim sl As String,s2 AS String s1="abcdef" Call lnvert(s1,s2) Print s2 End Sub Private Sub lnvert(ByVal xstr As String,ystr As String) Dim tempstr As Stdng i=Len(xstr) Do While i>=1 tempstr=tempstr+Mid(xstr,i,1) i=i-1 Loop ystr=tempstr End SubA.fedcbaB.abcdefC.afbecdD.defabc

在窗体上画一个命令按钮和两个文本框,其名称分别为Command1、Text1和Text2,在属性窗口中把窗体的KeyPreview属性设置为True,然后编写如下程序: Diln S1 As String,S2 As String Private Sub Form. Load( ) Text1.Text="" Text2.Text="" Text1.Enabled=False Text2.Enabled=False End Sub Private Sub Form. KeyDown(KeyCode As Integer,Shift As Integer) S2=S2&Chr(KeyCode) End Sub Pri vate Sub Form. KeyPress(KeyAscii As Integer) S1=S1&Chr(KeyAscii) End Sub Private Sub Command1 Click( ) Text1.Text=S1 Text2.Text=S2 S1="" S2="" End Sub 程序运行后,先后按“a”、“b”、“c”键,然后单击命令按钮,在文本框Text1和Text2中显示的内容分别为( )。A.abc和ABCB.空白C.ABC和abcD.出错

运行下列程序:Private Sub Command1_Click( )Dim s1 As String * 1Dim s2 As Strings1 = aFor i = Asc(s1) To Asc(s1) + 4s2 = s2 Chr(i)Next iPrint s2End Sub单击Command1命令按钮后,则在窗体上显示的结果是( )。A.aB.abcdeC.aaaaD.s2

下列程序的执行结果为 Private Sub Command1_Click() Dim s1 As String,s2 As String S1;="abcdef" Call Invert(s1,s2) Print s2 End Sub Private Sub Invert (ByVal xstr As String,ystr As String) Dim tempstr As String i=Len(xstr) Do While i=1 tempstr=tempstr+Mid(xstr,i,1) i=i-1 Loop ystr=tempstr End SubA.fedcbaB.abcdefC.afbecdD.defabc

下列程序的执行结果为 Private Sub Commandl_Click() Dim s1 As String ,s2 As String s1= "abcd" Call Transfer(sl,s2) Print s2 End Sub Private Sub Transfer (ByVal xstr As String,ystr As String) Dim tempstr As String ystr=tempstr End SubA.dcbaB.abdcC.abcdD.dabc

下列程序运行后的输出结果是______。Private Sub f(k,s)s=1For j=1 To ks=s*jNextEnd SubPrivate Sub Command1_Click()Sum=0For i=1 To 3Call f(i,s)Sum=Sum+sNextPrint SumEnd Sub

public class Base {  public static final String FOO = “foo”;  public static void main(String[] args) {  Base b = new Base();  Sub s = new Sub();  System.out.print(Base.FOO);  System.out.print(Sub.FOO);  System.out.print(b.FOO);  System.out.print(s.FOO);  System.out.print(((Base)s).FOO);  } }  class Sub extends Base {public static final String FOO=bar;}  What is the result?() A、 foofoofoofoofooB、 foobarfoobarbarC、 foobarfoofoofooD、 foobarfoobarfooE、 barbarbarbarbarF、 foofoofoobarbarG、 foofoofoobarfoo

class Super {  public int i = 0;  public Super(String text) {  i = 1; }  }  public class Sub extends Super {  public Sub(String text) {  i = 2;  }   public static void main(String args[]) {  Sub sub = new Sub(“Hello”);  System.out.println(sub.i);  }  }  What is the result?()  A、 0B、 1C、 2D、 Compilation fails.

设字符串S1= “ABCDEF”,S2= “PQRS”,则运算S=CONCAT(SUB(S1,2,LEN(S2)),SUB(S1,LEN(S2),2))后的串值为()。

s=”this is the mainstring”,sub=”string”,strindex(s,sub)是()

单选题class Super {  public int i = 0;  public Super(String text) {  i = 1; }  }  public class Sub extends Super {  public Sub(String text) {  i = 2;  }   public static void main(String args[]) {  Sub sub = new Sub(“Hello”);  System.out.println(sub.i);  }  }  What is the result?()A 0B 1C 2D Compilation fails.

单选题public class Base {  public static final String FOO = “foo”;  public static void main(String[] args) {  Base b = new Base();  Sub s = new Sub();  System.out.print(Base.FOO);  System.out.print(Sub.FOO);  System.out.print(b.FOO);  System.out.print(s.FOO);  System.out.print(((Base)s).FOO);  } }  class Sub extends Base {public static final String FOO=bar;}  What is the result?()A foofoofoofoofooB foobarfoobarbarC foobarfoofoofooD foobarfoobarfooE barbarbarbarbarF foofoofoobarbarG foofoofoobarfoo