插入運算符使等式成立課程設計實驗報告

設計程序在表達式“=a”中左邊的適當位置插入運算符“+”“-”或“*”，以使等式成立，列出所有可能情況。例如：當a=1000時，123+45-67+8-9=100。

在小學就遇到過這樣的問題，只是那時遇到的這樣的問題使很簡單的，沒有乘，並且現在的程序要求的使把所有符合條件的答案都選出來。所以可以考慮使用編寫的程序來解決問題。

首先問題的左邊是“”中插入適當的運算符，可以想象成有這九個人按順序站著，然後在他們中間插入木板，木板分別為：“+”,“-”,“*”。把木板出入後就構成了一個表達式，然後通過特定的函數來篩選能夠使等式成立的表達式，並輸出。 - the was to in the " = a" on the left in the "" and"- "or"* ", in order to make was , the list of all . For : when a = 1000, 123 45-67 8-9 = 100. In is such a , but then such a that very , not by, and now the of all meet the of the are to. So using to solve the . The first left is "" , can this nine in , and then in the midst of them into board, board is: "","- ", "*". After the board in and out of an , and then the to can make , and .