add a Vector2 class

this is a basic implementation of a Vector2 class (a 2D Vector) with
math operator support by overloading the math operators.

src/CMakeLists.txt

@@ -10,3 +10,5 @@ add_executable(FunctionArguments FunctionArguments.cc)
 add_executable(exceptions exceptions.cc)
 add_executable(HeapMemory HeapMemory.cc)
 add_executable(AbstractClasses AbstractClasses.cc)
+add_executable(vector vector.cc)
+add_executable(Vector2 Vector2.cc)

src/FunctionArguments.cc

@@ -1,3 +1,4 @@
+#include <format>
 #include <iostream>
 #include <string>
 
@@ -11,7 +12,7 @@ void sus(std::string susValue, std::string& susReference)
 
 void print_string(std::string nameOf, std::string& string)
 {
-	std::cout << "The value of " << nameOf << " is " << string << std::endl;
+	std::cout << std::format("The value of {} is {}", nameOf, string) << std::endl;
 }
 
 void print_sussy_strings(std::string& sus1, std::string& sus2)

src/Vector2.cc

@@ -0,0 +1,54 @@
+#include <format>
+#include <iostream>
+#include <string>
+class Vector2 {
+public:
+	double x;
+	double y;
+
+	Vector2(double x, double y)
+	{
+		this->x = x;
+		this->y = y;
+	}
+
+	Vector2 operator+(const Vector2& vec)
+	{
+		return Vector2(x + vec.x, y + vec.y);
+	}
+
+	Vector2 operator-(const Vector2& vec)
+	{
+		return Vector2(x - vec.x, y - vec.y);
+	}
+
+	Vector2 operator*(const Vector2& vec)
+	{
+		return Vector2(x * vec.x, y * vec.y);
+	}
+
+	Vector2 operator/(const Vector2& vec)
+	{
+		return Vector2(x / vec.x, y / vec.y);
+	}
+
+	constexpr std::string to_string() {
+		return std::format("<{},{}>",x,y);
+	}
+};
+
+int main()
+{
+	Vector2 position(5, 10);
+	Vector2 offset(10, 5);
+
+	Vector2 destination = position + offset;
+	Vector2 negativeDestination = position - offset;
+	Vector2 multipledDestination = position * offset;
+	Vector2 dividedDestination = position / offset;
+
+	std::cout << std::format("positive destination: {}", destination.to_string()) << std::endl;
+	std::cout << std::format("negative destination: {}", negativeDestination.to_string()) << std::endl;
+	std::cout << std::format("multipled destination: {}", multipledDestination.to_string()) << std::endl;
+	std::cout << std::format("divided destination: {}", dividedDestination.to_string()) << std::endl;
+}

src/inheritance.cc

@@ -1,3 +1,4 @@
+#include <format>
 #include <iostream>
 #include <string>
 
@@ -11,6 +12,7 @@ public:
 	static void PrintName(Crewmate crewmate)
 	{
 		std::cout << "Crewmates Name: " << crewmate.name << std::endl;
+		std::cout << std::format("Crewmates Name: {}", crewmate.name) << std::endl;
 	}
 };
 
@@ -33,6 +35,6 @@ int main()
 	crewmate.PrintName(crewmate);
 
 	if (imposter.imposter) {
-		std::cout << "Imposter is a sussy imposter and their name is " << imposter.name << std::endl;
+		std::cout << std::format("Imposter is a sussy imposter and their name is {}", imposter.name) << std::endl;
 	}
 }

src/sqrt.cc

@@ -1,4 +1,5 @@
 import Math;
+#include <format>
 #include <iostream>
 
 void print_squared(double x);
@@ -11,5 +12,5 @@ int main()
 
 void print_squared(double x)
 {
-	std::cout << "the squared of " << x << " is " << Math::square(x) << std::endl;
+	std::cout << std::format("the squared of {} is {}", x, Math::square(x)) << std::endl;
 }

src/vector.cc

@@ -0,0 +1,84 @@
+#include <format>
+#include <iostream>
+#include <stdexcept>
+
+class Vector {
+public:
+	Vector(int size)
+		: elem { new double[size] }
+		, sz { size }
+	{
+		for (int i = 0; i != size; ++i) {
+			elem[i] = 0;
+		}
+	}
+
+	~Vector()
+	{
+		delete[] elem;
+	}
+
+	Vector(const Vector& a)
+		: elem(new double[a.sz])
+		, sz { a.sz }
+	{
+		for (int i = 0; i!=sz;++i) {
+			elem[i] = a.elem[i];
+		}
+	}
+
+	Vector& operator=(const Vector& a) {
+		double* p = new double[a.sz];
+		for (int i =0; i!=sz; ++i) {
+			p[i] = a.elem[i];
+		}
+		delete[] elem;
+		elem = p;
+		sz = a.sz;
+		return *this;
+	}
+
+	double& operator[](int i)
+	{
+		if (i < 0 || i > size() - 1) {
+			throw std::out_of_range { "Vector::operator[]" };
+		}
+		return elem[i];
+	}
+
+	void print_element(int i)
+	{
+		if (i < 0 || i > size() - 1) {
+			throw std::out_of_range { "Vector::print_element(int i)" };
+		}
+		std::cout << std::format("element[{}] : {}", i, elem[i]) << std::endl;
+	}
+
+	int size() const
+	{
+		return sz;
+	}
+
+private:
+	double* elem;
+	int sz;
+};
+
+int main()
+{
+	Vector vec(3);
+
+	vec[0] = 1;
+	vec[1] = 2;
+	vec[2] = 3;
+
+	vec.print_element(0);
+	vec.print_element(1);
+	vec.print_element(2);
+
+	Vector longVector(100000);
+
+	for (int i = 0; i < longVector.size(); i++) {
+		longVector[i] = 21;
+	}
+}