reverse_engineering.md

Simple Calculator in C

Project Structure

The project is organized into the following files:

• calculator.c: Contains the main implementation of the calculator. This file includes:

  • The main() function, which is the entry point of the program. It manages user input and calls appropriate functions based on user choices.
  • Definitions for arithmetic functions such as add(), subtract(), multiply(), and divide().

• calculator.h: Contains declarations of functions used in the project. This header file includes:

  • Function prototypes for the arithmetic operations: add(), subtract(), multiply(), and divide().

File Descriptions

calculator.c

• main() Function:

  • Initializes the program, handles user input, and calls arithmetic functions.

• Arithmetic Functions:

  • int add(int a, int b): Returns the sum of a and b.
  • int subtract(int a, int b): Returns the difference between a and b.
  • int multiply(int a, int b): Returns the product of a and b.
  • float divide(int a, int b): Returns the quotient of a divided by b. Includes error handling for division by zero.

calculator.h

• Function Declarations:
  • int add(int a, int b);
  • int subtract(int a, int b);
  • int multiply(int a, int b);
  • float divide(int a, int b); (Note: float is used for division to handle fractional results.)

Code Flow

1. Initialization:

   • The main() function starts and prompts the user for input.

2. User Interaction:

   • The program reads the user's choice and corresponding operands.
   • Based on the user’s choice, it calls the appropriate arithmetic function.

3. Function Execution:

   • Each arithmetic function performs its operation and returns the result.
   • The result is then displayed to