Tweaked the error message a bit

basecalc.cpp

@@ -23,7 +23,7 @@ int BaseCalculator::calculate(const Operation& op)
         case OpType::Division:
         if (op.b == 0)
         {
-            std::cerr << "Invalid operation requested! Resetting the accumulator to 0";
+            std::cerr << "Invalid operation requested! Resetting the accumulator to 0\n";
             result = 0;
         }
         else
@@ -31,12 +31,13 @@ int BaseCalculator::calculate(const Operation& op)
         break;
 
         case OpType::Modulo:
-         if (op.b == 0)
+        if (op.b == 0)
         {
-            std::cerr << "Invalid operation requested! Resetting the accumulator to 0";
+            std::cerr << "Invalid operation requested! Resetting the accumulator to 0\n";
             result = 0;
         }
-        result = op.a % op.b;
+        else
+            result = op.a % op.b;
         break;
 
         case OpType::Special: