已知一交流电流,当t=0时的i0=1A,初相位为30°,则这个交流电的有效值为()。
请选出以下程序的输出结果includemain(){ int a[]={1,2,3,4},i;int x=0;for(i=0;i请选出以下程序的输出结果 #include<stdio.h> main() { int a[]={1,2,3,4},i; int x=0; for(i=0;i<4;i++) { sub(a,x);printf("%d",x);} printf("\n");} sub(s,y) int*s,y; { static int t=3; y=s[t];t--; }A.1 2 3 4B.4 3 2 1C.0D.4444
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有如下程序: Private Sub Commandl_Click() Dim a As Single Dim b As Single a=2:b=4 Call CS(a,b)End Sub Sub CS(x As Single,y As Single) t=X x=t\y y=t Mod y End Sub 程序运行后,单击命令按钮,a和b的值分别为A.0 0B.1 1C.0 2D.1 2
下面程序的输出结果是【 】。Private Sub Form_Click()i=0Do Until 0i=i+1if i>10 then Exit DoLoopPrint iEnd Sub
设有如下程序:Private Sub Form—Click()Clsa$=“ABCDFG”For i=1 T0 6Print Tab(12-i);【 】NextiEnd Sub程序运行后,单击窗体,结果如图所示,请填空。
在窗体上画一个名称为CoilTlilandl的命令按钮,然后编写如下事件过程: Private Sub command1 Click() Dim m As Integer, i As Integer, x(3)As Integer For i=0 To 3:x(i)=i:Next i For i = 1 To 2: Call sub1(x,i):Next i For i = 0 To 3: Print x(i);: Next i End Sub Private Sub sub1(a()As Integer,k As Integer) Dim i As Integer Do a(k)=a(k)+a(k+1) j = j + 1 Loop While j < 2 End Sub 程序运行后,单击命令按钮,则窗体上显示的内容是A.0 3 7 5B.0 1 2 3C.3 2 4 5D.0 5 8 3
以下能够正确计算1+2+3+…+10的程序是A.Private Sub Command1_Click() Sum=0 ForI=1 To 10 Sum=Sum+I Next I Print Sum End SubB.Private Sub Command1_Click() Sum=0,I=1 Do While I<=10 Sum=Sum+I I=I+1 Print Sum End SubC.Private Sub Command1_Click() Sum=0: I=1 Do Sum=Sum+I I=I+1 Loop While I<10 Print Sum End SubD.Private Sub Command1_Click() Sum=0: I=1 Do Sum=Sum+I I=I+1 Loop Until I<10 Print Sum End Sub
有如下程序。 Private Sub Commandl_Click() Dim a As Single Dim b As Single a=5:b=4 Call Sub1 ( a,B)End Sub Sub Subl(x As Single, y As Single) t=x x=t\y y = t Mod y End Sub 在调用运行上述程序后,a和b的值分别为A.0 0B.1 1C.2D.1 2