diff --git a/CM2010 Software Design and Development/Topic 4/11.2.1 Types of errors/compile-error.cpp b/CM2010 Software Design and Development/Topic 4/11.2.1 Types of errors/compile-error.cpp
new file mode 100644
index 0000000..a8d88fe
--- /dev/null
+++ b/CM2010 Software Design and Development/Topic 4/11.2.1 Types of errors/compile-error.cpp	
@@ -0,0 +1,10 @@
+int test()
+{
+  return 1;
+}
+
+int main()
+{
+  test(128);
+  return 0;
+}
\ No newline at end of file
diff --git a/CM2010 Software Design and Development/Topic 4/11.2.1 Types of errors/link-error.cpp b/CM2010 Software Design and Development/Topic 4/11.2.1 Types of errors/link-error.cpp
new file mode 100644
index 0000000..2fa0faf
--- /dev/null
+++ b/CM2010 Software Design and Development/Topic 4/11.2.1 Types of errors/link-error.cpp	
@@ -0,0 +1,13 @@
+int test(); // Function signature
+
+// The implementation fixes the link-build error
+// in test()
+// {
+//   return 10;
+// }
+
+int main()
+{
+  test();
+  return 0;
+}
\ No newline at end of file
diff --git a/CM2010 Software Design and Development/Topic 4/11.2.1 Types of errors/non-error.cpp b/CM2010 Software Design and Development/Topic 4/11.2.1 Types of errors/non-error.cpp
new file mode 100644
index 0000000..a7150c8
--- /dev/null
+++ b/CM2010 Software Design and Development/Topic 4/11.2.1 Types of errors/non-error.cpp	
@@ -0,0 +1,9 @@
+int calculateArea(int width, in height)
+{
+  return width * height;
+}
+int main()
+{
+  int area = calculateArea(-10, -12); // non-sensical because a rectangle can't have negative dimensions
+  return 0;
+}
\ No newline at end of file
diff --git a/CM2010 Software Design and Development/Topic 4/11.2.1 Types of errors/runtime-error.cpp b/CM2010 Software Design and Development/Topic 4/11.2.1 Types of errors/runtime-error.cpp
new file mode 100644
index 0000000..6466a20
--- /dev/null
+++ b/CM2010 Software Design and Development/Topic 4/11.2.1 Types of errors/runtime-error.cpp	
@@ -0,0 +1,12 @@
+#include <iostream>
+int divide(int x, int y)
+{
+  return x/y;
+}
+
+int main()
+{
+  int div = divide(10, 0); // can't divide by zero
+  std::cout << div << std::endl;
+  return 0;
+}
\ No newline at end of file
diff --git a/CM2010 Software Design and Development/Topic 4/11.2.1 Types of errors/syntax-error.cpp b/CM2010 Software Design and Development/Topic 4/11.2.1 Types of errors/syntax-error.cpp
new file mode 100644
index 0000000..3daa23c
--- /dev/null
+++ b/CM2010 Software Design and Development/Topic 4/11.2.1 Types of errors/syntax-error.cpp	
@@ -0,0 +1,5 @@
+int main()
+{
+  int @!#* = 10;
+  return 0;
+}
\ No newline at end of file