If you could not pop two operators, the syntax of the postfix expression was not correct.
You place text and graphics objects on the page with the same postfix syntax as that of the multiplication and addition example above.
Converting infix expression to a postfix expression.
If the postfix expression was correctly formed, the stack should be empty.
postfix Polish notation
Evaluating a postfix expression is simpler than directly evaluating an infix expression.
Converting infix notation to postfix notation.
This is the opposite of the infix to postfix translation algorithm, where operators were stored on the stack.
任何方式可以被用作中綴(infix)或後綴(postfix)*作符。
在頁面中佈置文本和圖形對象與上文的乘法和加法示例使用的postfix語法相同。
Any method may be used as an infix or postfix operator, and.
Read the postfix expression from left to right.