diff --git a/src/NR.h b/src/NR.h
new file mode 100644
index 0000000..8d6c6ce
--- /dev/null
+++ b/src/NR.h
@@ -0,0 +1,12 @@
+#pragma once
+
+class NR {
+  private:
+	int m_Numerator;
+	int m_Denominator;
+
+  public:
+	NR() : m_Numerator(0), m_Denominator(1) {}
+	NR(int entier) : m_Numerator(entier), m_Denominator(1) {}
+	NR(int numerator, int denominator) : m_Numerator(numerator), m_Denominator(denominator) {}
+};
\ No newline at end of file