Initial commit

basecalc.h

@@ -0,0 +1,17 @@
+#include "Operation.h"
+class BaseCalculator
+{
+    public:
+    
+    int calculate(const Operation& a);
+
+    virtual ~BaseCalculator();
+
+    explicit operator int();
+
+    virtual int negate();
+    virtual int special(int a);
+
+    private:
+    int result = 0;
+};