First version

Wagon.cpp

@@ -0,0 +1,61 @@
+#include "Wagon.h"
+
+Wagon::Wagon() {
+    this->number = -1;
+    this->operation = '\0';
+}
+
+Wagon::Wagon(double number)
+{
+    this->number = number;
+    this->operation = '\0';
+}
+
+Wagon::Wagon(char operation)
+{
+    this->number = -1;
+    this->operation = operation;
+}
+
+double Wagon::getNumber()
+{
+    return this->number;
+}
+
+char Wagon::getOperation()
+{
+    return this->operation;
+}
+
+void Wagon::setNumber(double number)
+{
+    if (number < 0) {
+        return;
+    }
+    this->number = number;
+}
+
+void Wagon::setOperation(char operation)
+{
+    this->operation = operation;
+}
+
+bool Wagon::isNumber()
+{
+    return !this->isOperation();
+}
+
+bool Wagon::isOperation()
+{
+    return this->getOperation();
+}
+
+bool Wagon::isUnary()
+{
+    return this->operation < 0;
+}
+
+bool Wagon::isEnd()
+{
+    return this->operation == END_OF_ZUG;
+}