Calculator

A simple calculator written in C that supports basic arithmetic operations, parentheses, decimal numbers, and negative numbers.

Features

• Supports addition (+), subtraction (-), multiplication (x), and division (/).
• Handles parentheses for operation precedence.
• Supports decimal numbers and negative numbers.

Compilation

make re

Usage

Run the calculator with an expression as an argument:

./calculator "expression"

Examples

./calculator "3.2+5"
Result = 8.200000

./calculator "5x(8-3)"
Result = 25.000000

./calculator "-5x(8-3)"
Result = -25.000000

Available Commands

Build Commands

• make all or make: Compile the project.
• make re: Clean and rebuild everything.
• make clean: Remove object files and temporary files.
• make fclean: Remove compiled binaries and clean files.
• make debug: Compile with debugging flags (-ggdb3).

Source Files

The project is structured as follows:

📂 src
├── 📄 main.c
├── 📄 operation.c
├── 📄 parentheses.c
│
├── 📂 expression
│   ├── 📄 evaluator.c
│   ├── 📄 parser.c
│   ├── 📄 part.c
│
├── 📂 utils
│   ├── 📄 list.c
│   ├── 📄 delete_char.c
│   ├── 📄 is_digit.c
│   ├── 📄 strtod.c

Compilation Flags

• CFLAGS: -W -Wall -Wextra -O1 (Enables warnings for better code quality).
• CPPFLAGS: -I./include (Includes the header files from the include/ directory).

Author

• Kévin Demy