Algebra-Solver

A simple C++ algebra solver for evaluating and solving equations.

Features

• Solve linear and quadratic equations (1 variable)
• Custom variable names (alphanumeric, must not conflict with function names)
• Supports standard arithmetic:
  • Addition +
  • Subtraction -
  • Multiplication * (implicit multiplication allowed, eg. 3x)
  • Division /
  • Powers ^
• Built-in math functions:
  • sin, cos, tan
  • asin, acos, atan
  • log, ln
  • sqrt, floor, ceil, abs
• Built-in constants:
  • pi, e, phi

Example

> 2x ^ 2 + 4x - 6 = 0
1
-3

> x = sin(10)
0.1736481777

Requirements

• CMake ≥ 3.16
• C++20
• A compatible compiler (GCC, Clang, MSVC)

Build Instructions

1. Clone the repository

git clone https://github.com/nixuh3/Algebra-Solver.git
cd Algebra-Solver

2. Configure project

cmake -S . -B build

3. Build

cmake --build build

4. Run

./build/Algebra-Solver

Notes

• Enter quit to exit
• Equations must include exactly one variable
• Spaces are optional but recommended
• Trigonometric functions use degrees (not radians)
• Invalid expressions may result in errors which currently terminate the program (improvements planned)

Contributing

Pull requests are welcome. For major changes, open an issue first.

License

MIT License

Todo

• Improve error messages and diagnostics
• Support systems of equations (multiple variables)
• Add higher-degree polynomial solving
• Add inequality solving
• Allow variables inside function arguments (e.g., sin(2x))
• Improve parsing and edge case handling
• Add commands such as simplify and factorize