VB編程中怎樣解數學燈謎ABCD-CDC=ABC

先說說理論,用程序來解決這類問題,並不需要想數學壹樣去計算,去列方程,

壹般我們用最簡單的思路.

就是將壹個個數字套進去,然後用程序去判斷(這在數學中該是叫做窮舉法)

代碼的話樓上倆個都很好,如果看不懂的話可以參考下我這個

ABCD-CDC=ABC

這題目首先看,它有4個變量,其中A和C肯定不能是0,那麽代碼可以是:

Dim a As Integer, b As Integer, c As Integer, d As Integer

Dim ABCD As Integer, CDC As Integer, ABC As Integer

For a = 1 To 9

For b = 0 To 9

For c = 1 To 9

For d = 0 To 9

ABCD = (a * 1000 + b * 100 + c * 10 + d)

CDC = (c * 100 + d * 10 + c)

ABC = (a * 100 + b * 10 + c)

If ABCD - CDC = ABC Then MsgBox ABCD & "-" & CDC & "=" & ABC

這段代碼的實際運算和樓上沒任何區別(可能跟繁瑣,也許能讓妳更容易理解吧)

目的都是窮舉出ABCD的所有可能,然後壹次次套用比較判斷