[CCV] Added three test programs for CCV exercise 1

Signed-off-by: Jim Martens <github@2martens.de>

ccv/sheet1/AskInteger.cpp

@@ -0,0 +1,25 @@
+//
+// Created by jim on 4/4/17.
+//
+#include <iostream>
+using namespace std;
+
+int main()
+{
+  int input;
+  cout << "Bitte geben Sie eine Zahl ein." << endl;
+  cin >> input;
+  if (input > 9)
+  {
+    cout << input << " ist größer gleich 10." << endl;
+  }
+  else if (input >= 0)
+  {
+    cout << input << " liegt zwischen einschließlich 0 und 9." << endl;
+  }
+  else
+  {
+    cout << input << " ist negativ." << endl;
+  }
+  return 0;
+}

ccv/sheet1/Rectangle.cpp

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+//
+// Created by jim on 4/4/17.
+//
+#include <iostream>
+using namespace std;
+
+class Rectangle
+{
+private:
+    unsigned int width;
+    unsigned int height;
+
+public:
+    Rectangle(unsigned int width, unsigned int height)
+    {
+      this->width = width;
+      this->height = height;
+    }
+
+    unsigned int area()
+    {
+      return this->height * this->width;
+    }
+};
+
+int main()
+{
+  Rectangle* rec = new Rectangle(10, 20);
+  cout << rec->area() << endl;
+}

ccv/sheet1/hello.cpp

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+//
+// Created by jim on 4/4/17.
+//
+#include <iostream>
+#include <string>
+using namespace std;
+
+int main()
+{
+  std::cout << "Hello world!";
+  return 0;
+}