Merge branch 'master' of gitlab.doc.ic.ac.uk:sm919/wacc_examples

invalid/semanticErr/variables/undeclaredType.wacc

+# use of an undeclared type
+
+# Output:
+# #semantic_error#
+
+# Exit:
+# 200
+
+# Program:
+
+begin
+  MyType x = 10
+end