Introduction - If you have any usage issues, please Google them yourself
This code implements the operator precedence grammar analyzer, analysis and processing to achieve subtraction multiplication and division of integers expression. 1. Scanning procedures, will any kind of integer arithmetic expression (no variable operand is a positive integer, subtraction, multiplication and division to allow operation, allowing the use of parentheses and multi parentheses) for word recognition and spelling errors can be found in 2. Bottom-up analysis program on the stack to achieve bottom-up analysis of the word token string 3. According to operator precedence grammar analysis step, showing the analysis of the stack, compares the priority token string status changes, an amount of correlation (operator priority table analysis) and outputs the result, it is determined whether the current statute or be moved into operation (if required statute) Displays the current string should Statute 4. Show syntax tr