I have written a program that delt with taking an expression from file and evaluating that expression based on the order of operations. The expression is not quite evaluating the way that it should in longer expressions. If anyone can help, I would appreciated it more than anything

1) need a txt file labeled expression.txt, it can handle digits 1-9, left parens, right parens, and operators +-*/

2) the code: i will post if anyone can look at it