Question

四叶玫瑰数的VB怎么编？

Answer 1

Private Sub Command1_Click()

Me.Cls

Dim s As Single, j As Long, t As String, n As Long, m As Long

For j = 1000 To 9999

t = j

m = 0

For k = 1 To 4

n = Val(Mid(t, k, 1))

m = m + n * n * n * n

Next

If m = j Then

Print j; "为玫瑰花数"

s = s + j

End If

Next

Print "总和为："; s

End Sub

Answer 2

四位数各位上的数字的四次方之和等于本身为四叶玫瑰数。

实现源码如下：
program roseNumber;
var
a,b,c,d:longint;

function four(n:longint):longint;
begin
four:=n*n*n*n;
end;

begin
for a:=1 to 9 do
for b:=0 to 9 do
for c:=0 to 9 do
for d:=0 to 9 do
begin
if(1000*a+100*b+10*c+d=four(a)+four(b)+four(c)+four(d))then
begin
writeln(a,b,c,d);
end
end
end.

Answer 3

四位数是从1001-9999
直接上循环了,太晚了,说完睡觉去
Private Sub Command1_Click()
Dim i As Long
Dim s As String
Dim sum As Long
Dim n1, n2, n3, n4 As Long
For i = 1001 To 9999
s = CStr(i)
n1 = CLng(Mid(s, 1, 1)) ^ 4
n2 = CLng(Mid(s, 2, 1)) ^ 4
n3 = CLng(Mid(s, 3, 1)) ^ 4
n4 = CLng(Mid(s, 4, 1)) ^ 4
sum = n1 + n2 + n3 + n4
If sum = i Then Print i
Next i
End Sub

我自己运行了,1001-9999只有三个数:
1634
8208
9474