pointer

CPPKoans/AboutPointers.cpp

@@ -11,10 +11,44 @@
 void aboutPointers(){
 	int i = 5;
 	int *i_pointer = &i;
-	expectThat("pointers contain memory addresses - they are a reference to the variable",_____,*i_pointer);
+	int* i_pointer2 = &i;
+	expectThat("pointers contain memory addresses - they are a reference to the variable",5,*i_pointer);
+	expectThatNot("pointers are thus different from the value they are pointing to",5,i_pointer);
+	*i_pointer = 6;
+	expectThat("now the value of i has changed",6,i);
+}
+void aboutAssignmentCompatibility(){
+	int *pInt, i=5;
+	double *pDouble;
+	pInt = &i;
+	// pDouble = (int*)pInt; does not compile in Visual Studio
+}
+void aboutDynamicAllocation(){
+	int *p;
+	p = new int;
+	*p = 5000;
+	expectThatNot("what's in the pointer now?",0,p);
+	delete p;
+	// *p = 6000; this produces a crash / Access Violation
+}
+void aboutPointersAndArrays(){
+	int number = 10;
+	char* p = new char[number];
+	char defaultChar = 'x';
+	for (int i=0;i<number;i++){
+		*p = defaultChar;
+		p++;
+	}
+	for (int i=0;i<number;i++){
+		expectThat("now the defaultChar should be in every cell #"+i,defaultChar,p[i]);
+	}
+
 }
 void AboutPointers::meditate(){
 	aboutPointers();
+	aboutAssignmentCompatibility();
+	aboutDynamicAllocation();
+	aboutPointersAndArrays();
 
 }