Introduction - If you have any usage issues, please Google them yourself
In accordance with the arithmetic addition, subtraction, multiplication, division, power (^) and the parentheses precedence relations and practices, the preparation of the calculator program. ① from the keyboard to enter a complete expression, in order to ' #' as the input signal the end of the expression. ② Enter the expression values ??are integers greater than zero. The middle of the computation process only if there is decimal rounding.