First implemention of fraction

fractions.cpp

@@ -0,0 +1,18 @@
+#include <iostream>
+#include "fractions.hpp"
+
+
+int main() {
+	int a = 7;
+	int b = 3;
+	int c = 1;
+	int d = 11;
+	fraction q(a,b);
+	fraction q2(c,d);
+	cout << a << "/" << b << '=' << q << endl;
+	cout << q << "+" << q2 << '=' << q + q2 << endl;
+	cout << q << "-" << q2 << '=' << q - q2 << endl;
+	cout << q << "*" << q2 << '=' << q * q2 << endl;
+	cout << q << "/" << q2 << '=' << q / q2 << endl;
+	return 0;
+}

fractions.hpp

@@ -0,0 +1,69 @@
+#include <iostream>
+
+using namespace std;
+
+class fraction {
+	private:
+		int n, d;
+		int gcd (int a, int b) const {
+			if (a == 0) {
+				return b;
+			}
+			if (b == 0) {
+				return a;
+			}
+			if (a == b) {
+				return a;
+			}
+
+			if (a > b) {
+				return gcd(a-b, b);
+			}
+
+			return gcd(a, b-a);
+		}
+	public:
+		// Constructors
+		fraction(int a, int b) {
+			int hcf = gcd(a,b);
+			n = a / hcf;
+			d = b / hcf;
+		}
+		fraction(const fraction &q) {
+			int hcf = gcd(q.n,q.d);
+			n = q.n / hcf;
+			d = q.d / hcf;
+		}
+		// Operators
+		fraction operator+(const fraction &that) {
+			int numerator = this->n * that.d + that.n * this->d;
+			int denominator = this->d * that.d;
+			fraction q(numerator, denominator);
+			return q;
+		}
+		fraction operator-(const fraction &that) {
+			int numerator = this->n * that.d - that.n * this->d;
+			int denominator = this->d * that.d;
+			fraction q(numerator, denominator);
+			return q;
+		}
+		fraction operator*(const fraction &that) {
+			int numerator = this->n * that.n;
+			int denominator = this->d * that.d;
+			fraction q(numerator, denominator);
+			return q;
+		}
+		fraction operator/(const fraction &that) {
+                        fraction a(this->n,this->d);
+			fraction b(that.d,that.n);	
+			return a * b;
+		}
+		friend ostream &operator<<( ostream &os, const fraction &q ) { 
+			if( q.d == q.n) {
+				os << 1;
+			} else {
+				os << q.n << '/' << q.d;
+			}
+			return os;
+		}
+};