dauletbayevych/my_bc_qwasar

my_bc

My bc is a basic calculator that can take input as an argument and return the result.

The project is using lexeical analysis and then parsing the input using basic parser.

The method used to solve the input after parsing is reversed polish notation.

Example

Input

my_bc "1 + 2 * (3 - 42) % 5"

Notation

1 2 3 42 - * 5 % +

Output

-2

Description

A valid expression:

• must only contain the operators +, -, *, /, and %
• must only have integer values
• can contain parentheses, but each group must be properly closed
• can contain spaces

Allowed function

• malloc(3)
• free(3)
• printf(3)
• write(2)

HOW TO USE

1. make to make the files.
2. ./my_bc followed by the expresion.
   • example ./my_bc "1 + 2 * (3 - 42) % 5"
3. After finishing using my_bc you can make clean