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@宦隶4945：编写程序:根据公式:1 - 2+3 - 4+5…+n;输入一个正整数,根据公式求和sum -
石河15668574199…… 1-2=-1,2个数字产生1个-1,即,和为-1 1-2=-1,3-4=-1,4个数字产生2个-1,即,和为-2 1-2=-1,3-4=-1,5-6=-1;6个数字产生3个-1,即,和为-3 n个数字产生n/2个-1,即,和为-n/2
@宦隶4945：补充完整以下程序,将从键盘输入的任意大写字母转换为小写字母,将小写字母转换为大写字母.求教各位大神 -
石河15668574199…… if ('A'<= c && c<='Z') c+='a'-'A'; else if ('a'<=c && c<='z') c-='a'-'A'; 或者,如果你确定所有的输入都是字母,则取反0x20这个位即可: 如,c = (c&~0x20) | (~c&0x20)
@宦隶4945：vba for循环to后面的数字每点击一下按钮自动加1怎么写 -
石河15668574199…… 定义一个全局变量j ,for循环里写成for i=1 to j ,然后在commandbutton_click事件过程里,设置该变量加1 ,j=j+1
@宦隶4945：Private Sub Command1 - Click() a = 0 For j = 1 To 15 a = a + j Mod 3 Next j Print a End Sub -
石河15668574199…… Private Sub Command1_Click() a = 0 For j = 1 To 15 '从1循环每步递增1到15 a = a + j Mod 3 '先运行 j 的求余 (J mod 3) 再累加给a Next j Print a End Sub
@宦隶4945：VB编程option base 1private sub command1 - click() dim d d=array(1,2,3,4,5) n=1 for k=5to 3step - 1 s=s+ -
石河15668574199…… Option Base 1 '因为用了这句,所以数组下标从1开始 Private Sub command1_click() Dim d d = Array(1, 2, 3, 4, 5) n = 1 For k = 5 To 3 Step -1 s = s + d(k) * n n = n * 10 Next k Print s '当k=5时,s=s+d(k)*n=0+5*1=5 '当k=4时,s=s+d(k)*n=5+4*10=45 '当k=3时,s=s+d(k)*n=45+3*100=345 '当k=2时,小于3,循环结束 End Sub
@宦隶4945：Private Sub Command1 - Click() For i = 1 To 3 For j = i To 1 a = a + 1 Next j Next i Print a End Sub -
石河15668574199…… 为了说明方便,给每个语句前面加上行号1 for i=1 to 32 for j=i to 13 a=a+14 next j5 next i6 print a 程序执行语句1时,循环初值 i=1 小于终值3,所以程序执行语句2-4 语句2 因i=1,所以循环初值 j=1 等于终值1,所以程序执行语句3 ( a=a+1),如果...
@宦隶4945：编程一个窗体的单击事件,要求单击窗体时,在窗体上输出:1+2+3+……+10的结果 要用VB做 -
石河15668574199…… ??Private Sub Form_Click() Dim sum As Integer Dim i As Integer For i = 1 To 10 sum = sum + i Next Print sum End Sub
@宦隶4945：C# 第一次按下button 执行一件事情,第二次按下button 执行另一件事情,如何完成,谢谢 -
石河15668574199…… 那么第三次按下时呢,执行哪个事件? private void button1_Click(object sender, System.EventArgs e) { int clickTimes; //按下次数 //获取按下次数 object tag = this.button1.Tag; if (tag == null) { clickTimes = 0; } else { clickTimes = Convert.ToInt...
@宦隶4945：VB编程计算下列公式的值,其中n (<15)为从键盘输入的正整数. S=1!+3!+5!+……+(2*n - 1)! 急求谢谢! -
石河15668574199…… Private Sub Command1_Click() Dim n As Integer, i As Integer Dim sum As Double n = Val(InputBox(＂Please Enter N:＂)) sum = 0 For i = 1 To n sum = sum + fac(2 * i - 1) Next i Print sum End Sub Function fac(n As Integer) As Double Dim f As Double f = 1# For i = 1 To n f = f * i Next i fac = f End Function
@宦隶4945：先定义一个求阶乘的函数,再利用循环的方法求3!+5!+7!+9! VB.NET函数 -
石河15668574199…… Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click Dim Result As Long = 0 For i As Integer = 3 To 9 Step 2 Result += Stair(i) Next Debug.WriteLine(Result) End Sub Private Function ...
石河15668574199…… 1-2=-1,2个数字产生1个-1,即,和为-1 1-2=-1,3-4=-1,4个数字产生2个-1,即,和为-2 1-2=-1,3-4=-1,5-6=-1;6个数字产生3个-1,即,和为-3 n个数字产生n/2个-1,即,和为-n/2
@宦隶4945：补充完整以下程序,将从键盘输入的任意大写字母转换为小写字母,将小写字母转换为大写字母.求教各位大神 -
石河15668574199…… if ('A'<= c && c<='Z') c+='a'-'A'; else if ('a'<=c && c<='z') c-='a'-'A'; 或者,如果你确定所有的输入都是字母,则取反0x20这个位即可: 如,c = (c&~0x20) | (~c&0x20)
@宦隶4945：vba for循环to后面的数字每点击一下按钮自动加1怎么写 -
石河15668574199…… 定义一个全局变量j ,for循环里写成for i=1 to j ,然后在commandbutton_click事件过程里,设置该变量加1 ,j=j+1
@宦隶4945：Private Sub Command1 - Click() a = 0 For j = 1 To 15 a = a + j Mod 3 Next j Print a End Sub -
石河15668574199…… Private Sub Command1_Click() a = 0 For j = 1 To 15 '从1循环每步递增1到15 a = a + j Mod 3 '先运行 j 的求余 (J mod 3) 再累加给a Next j Print a End Sub
@宦隶4945：VB编程option base 1private sub command1 - click() dim d d=array(1,2,3,4,5) n=1 for k=5to 3step - 1 s=s+ -
石河15668574199…… Option Base 1 '因为用了这句,所以数组下标从1开始 Private Sub command1_click() Dim d d = Array(1, 2, 3, 4, 5) n = 1 For k = 5 To 3 Step -1 s = s + d(k) * n n = n * 10 Next k Print s '当k=5时,s=s+d(k)*n=0+5*1=5 '当k=4时,s=s+d(k)*n=5+4*10=45 '当k=3时,s=s+d(k)*n=45+3*100=345 '当k=2时,小于3,循环结束 End Sub
@宦隶4945：Private Sub Command1 - Click() For i = 1 To 3 For j = i To 1 a = a + 1 Next j Next i Print a End Sub -
石河15668574199…… 为了说明方便,给每个语句前面加上行号1 for i=1 to 32 for j=i to 13 a=a+14 next j5 next i6 print a 程序执行语句1时,循环初值 i=1 小于终值3,所以程序执行语句2-4 语句2 因i=1,所以循环初值 j=1 等于终值1,所以程序执行语句3 ( a=a+1),如果...
@宦隶4945：编程一个窗体的单击事件,要求单击窗体时,在窗体上输出:1+2+3+……+10的结果 要用VB做 -
石河15668574199…… ??Private Sub Form_Click() Dim sum As Integer Dim i As Integer For i = 1 To 10 sum = sum + i Next Print sum End Sub
@宦隶4945：C# 第一次按下button 执行一件事情,第二次按下button 执行另一件事情,如何完成,谢谢 -
石河15668574199…… 那么第三次按下时呢,执行哪个事件? private void button1_Click(object sender, System.EventArgs e) { int clickTimes; //按下次数 //获取按下次数 object tag = this.button1.Tag; if (tag == null) { clickTimes = 0; } else { clickTimes = Convert.ToInt...
@宦隶4945：VB编程计算下列公式的值,其中n (<15)为从键盘输入的正整数. S=1!+3!+5!+……+(2*n - 1)! 急求谢谢! -
石河15668574199…… Private Sub Command1_Click() Dim n As Integer, i As Integer Dim sum As Double n = Val(InputBox(＂Please Enter N:＂)) sum = 0 For i = 1 To n sum = sum + fac(2 * i - 1) Next i Print sum End Sub Function fac(n As Integer) As Double Dim f As Double f = 1# For i = 1 To n f = f * i Next i fac = f End Function
@宦隶4945：先定义一个求阶乘的函数,再利用循环的方法求3!+5!+7!+9! VB.NET函数 -
石河15668574199…… Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click Dim Result As Long = 0 For i As Integer = 3 To 9 Step 2 Result += Stair(i) Next Debug.WriteLine(Result) End Sub Private Function ...
