QuickCalc

A terminal-based calculator program was made using flex, bison, and C++.

Features

• Basic Arithmetic Operations: Addition, subtraction, multiplication, and division are supported.
• Built-in Functions: The calculator includes a variety of built-in functions such as trigonometric functions (sin, cos, tan), logarithmic functions (log, log10), exponential functions (exp), square root (sqrt), and more.
• Reusing the previous answer: The calculator keeps track of the previous answer and allows users to reference it in subsequent calculations using _. If you want to access the previous answer, use _ in the calculation. If you want to use the answer two calculations ago, just use __ (2 times _)
• Error Handling: Comprehensive error handling for invalid input and mathematical errors.

Installation

1. Requirements: >=C++17, flex, bison

2. Clone the Repository: Clone this repository to your local machine.

   git clone https://github.com/Saphereye/flex_bison_calc

3. Build the project

   cd flex_bison_calc
   make repl

Features

• Basic arithmetic

  > 3 * 4
  12.000000
  > 255 ** 4
  4228250625.000000
  > 1/6
  0.166667

• Built-in functions

  > sum(1, 2, 3, 4, 5, 6)
  21.000000
  > sin(3.14)
  0.001593
  > median(4, 5, 3, 2, 1)
  3.000000
  > 10%3
  1.000000
  > 10.1%3.1
  0.800000

• Special functions and variables

  > 5!
  120.000000
  > 5.1!
  142.451944
  > 5!!
  6689502913449127120509299431182031258053015071153310066918800146811629520790841061032122839118801296905792978698449838385553111280551361744470298751804274423893297360062561614877543920066726903939072.000000
  > 4C2
  6.000000
  > 4P2
  12.000000
  > e
  2.718282
  > pi
  3.141593

• Referencing the previous answer

  > 1+1
  2.000000
  > _+1
  3.000000
  > __+1
  3.000000

• Descriptive error reporting

  > 1+
  Error [Line: 1 Column: 0]: syntax error, unexpected end of file
  > sin(1,,2)
  Error [Line: 2 Column: 7]: syntax error, unexpected ','
  > sin(cos(sin(1) +))
  Error [Line: 3 Column: 17]: syntax error, unexpected ')'