24点内简易计算器的实现。中缀表达式变为后缀表达式然后求值-Simple calculator within the 24-point implementation. Infix expression into postfix expression is then evaluated

24点内简易计算器的实现。中缀表达式变为后缀表达式然后求值-Simple calculator within the 24-point implementation. Infix expression into postfix expression is then uated

在原有初级计算器基础上做了些改进，利用后缀表达式求值，能将整个表达式在显示区显示，实现小数与负数运算(Some improvements have been made on the basis of the original primary calculator. By using postfix expression evaluation, the whole expression can be displayed in the display area, and decimal and ne