Introduction
For this project, you will implement an RPN calculator thatreads a series of expressions in RPN form from a file. The user hastwo options: they can either enter the filename as a command lineargument or they may be prompted for a filename after launching theprogram. In either case, the program halts if the file does notexist.
Individual expressions in RPN format (see below) are read fromthe file. If an expression is well-formed the program will evaluateit and display the expression along with its results on theconsole. Malformed expressions result in an error message beingdisplayed on the console.
Overview
Infix notation is the notationcommonly
OR
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