Systems Programming — BGU ECE

Coursework from Introduction to Systems Programming (20937), Ben-Gurion University of the Negev. The course covers C, C++, and Linux, progressing from procedural C to object-oriented C++ with templates and RTTI.

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Exercises

ex1–ex2 · UNIX fundamentals

Shell, file system, processes, and signals. Submitted as written assignments; no compiled source in this repo.

ex3 · Stock Management — C

Menu-driven CLI for managing a portfolio of stocks. Demonstrates modular C design: shared header (stock.h), separate translation units per feature (add, print, update, validate).

cd ex3/our_solution
gcc *.c -o stocks && ./stocks

ex4 · C data manipulation

Pointer arithmetic, dynamic memory, and string operations.

ex5 · Stack & Queue — C++

Linked-list–based Stack<int> and circular MyQueue<int>, implementing the Rule of Three (copy constructor, assignment operator, destructor). Interactive Menu class drives user input.

cd ex5/solution
mkdir build && cd build
cmake .. && make
./ex5_solution

ex6 · Shopping System — C++ OOP (Assignment 2)

Polymorphic customer model:

Class	Key features
Customer	Base class · ShoppingCart member · virtual add_to_cart
BusinessCustomer	Derived · overrides add_to_cart with bulk-discount logic
ShoppingCart	operator<<, operator+=, operator== · std::vector<Product>
Product	Value type with price, quantity, name
Supplier	Manages stock and price updates

cd ex6/solution
mkdir build && cd build
cmake .. && make
./ex6_solution

ex7 · Shapes Hierarchy — C++ OOP (Assignment 3)

Abstract base class with pure-virtual interface, RTTI dispatch, and a hand-rolled generic container:

Class / Template	Key features
Shape (abstract)	Dynamic char* color · getPerimeter() / getArea() pure-virtual
Circle	M_PI-based area and perimeter
Square	Side-length geometry
OrthogonalTriangle	Pythagorean hypotenuse
Array<T>	Manual new[]/delete[] · copy constructor · assignment operator

dynamic_cast is used for RTTI-based type identification at runtime.

cd ex7/solution
mkdir build && cd build
cmake .. && make
./solution

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C++ concepts covered

• Rule of Three (copy constructor, copy-assignment, destructor)
• Operator overloading (==, <<, +=)
• Polymorphic inheritance and virtual dispatch
• Abstract base classes with pure-virtual interfaces
• RTTI — dynamic_cast for runtime type identification
• Hand-rolled generic containers (Array<T>) with manual memory management
• Exception-based input validation

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Build requirements

• GCC / G++ (C++11 or later)
• CMake ≥ 3.10 (for ex5–ex7)
• Linux or WSL recommended; CLion/MinGW also works on Windows