CLI_Calculator

Abstract

A command line calculator which supports mathematical expressions with scientific functions is very useful for most developers. The command line is a text interface for your computer. It's a program that takes in commands, which it passes on to the computer's operating system to run. It is a convenient interface to use for most coding enthusiasts. Keeping that in mind, we decided that a calculator which can be run from the common line itself, without opening an external application would be a convenient tool. Our command line calculator is capable of parsing a human-readable mathematical expression with units, returning the value if it can be evaluated and informing the user about the position of an error if not. We utilized the concepts of Compiler Design by building our CLI calculator using a Lexer and Recursive Descent Parsing.

Concepts Used

Recursive Descent Parsing
Lexical Analysis

Usage Guidelines

Open your terminal and clone the repository

  git clone https://github.com/sashrika15/CLI_Calculator.git

Change to model directory
```
  cd CLI_Calculator
```

Compile the code

Unix
```
gcc -o calc -lm cli_calc.c
```
Windows:
```
cl /out:calc.exe cli_calc.c
```

Run the executable calculator on command prompt

References

We would like to thank Steve Hanov's Blog for the reference.