Calculator

A user-defined calculator struct type written in C++. The program provides standard calculator functionality to solve the equation which End-user input into program.

Project Description

First get input equation from user. Then create a header file(infixToPostfix.h) to convert equation to postfix format using stack.
Calculate the postfix equation using stack and push result step by step
Finally output the top of stack which store the final result.

Dependencies

You must have the following installed. The linux commands to install necessary packages shown below:

• GNU Make

  sudo apt-get install build-essential

Run

$ git clone git@github.com:Hmmsien/Calculator.git\

To run this project: make sure you are in the root of the project repository and run

$ make lab2

after program display "Enter your equation: "
enter your equation through input
hit enter to get the result

Test code

$ make lab2
g++ calculator.cpp -o calculator && ./calculator
Enter your equation: 
6+4*10-7
The result of the equation is: 39

$ make lab2
g++ calculator.cpp -o calculator && ./calculator
Enter your equation:
5^2+11
The result of the equation is: 36

$ make lab2
g++ calculator.cpp -o calculator && ./calculator
Enter your equation: . 
4.3+2^4
The result of the equation is: 20.3

Tech/Framework used

Understanding how stack WORK.
Stacks are a type of container adaptors with LIFO(Last In First Out) type of working, where a new element is added at one end (top) and an element is removed from that end only.

empty() – Returns whether the stack is empty
top() – Returns a reference to the top most element of the stack
push(g) – Adds the element ‘g’ at the top of the stack
pop() – Deletes the top most element of the stack