Fixed capitalization expanded Lab 4 instructions slightly README

lab3-4/README.md

@@ -71,9 +71,58 @@ diff -y my_output.txt ../traces/trace-lab3.txt
 
 ## Lab 4
 
-In lab 4 you will work in file `codegen.cc` search for  `/* --- Your code here --- */`'
+In Lab 4 you will work in file `codegen.cc` search for  `/* --- Your code here --- */`'
 to see where you need to introduce your changes.
 
+A good place to start is the function `BinaryGenerateCode`
+
+```C++
+/*
+ *
+ * This function is used to generate code for all kinds of binary
+ * operators and relations. The arguments to the function are the
+ * following:
+ *
+ * q        The QuadsList onto which the generated code is placed.
+ * realop   The quad to generate for the operator if the arguments
+ *          are of type real.
+ * intop    The quad to generate for the operator if the arguments
+ *          are of type integer.
+ * left     The AST for the left-hand side of the operator. The
+ *          value type of this AST must be the same as that of the
+ *          AST for the right-hand side.
+ * right    The AST for the right-hand side of the operator. The
+ *          value type of this AST must be the same as that of the
+ *          AST for the left-hand side.
+ * node     The operator node itself. You probably won't need this
+ *          unless you want to print an error message.
+ * type     If not NULL, this is the type of the result. This is
+ *          used for relations, where the type of the result is
+ *          always integer, even if the operands are real. If this
+ *          parameter is NULL, then the type of the result is the
+ *          same as the type of the operands (the parser needs to
+ *          make sure that the operands have the same type.)
+ *
+ * See the GenerateCode methods for the binary operators for
+ * examples of how this function is used.
+ *
+ */
+
+static VariableInformation *BinaryGenerateCode(QuadsList& q,
+                                               tQuadType realop,
+                                               tQuadType intop,
+                                               ASTNode *left,
+                                               ASTNode *right,
+                                               ASTNode *node,
+                                               TypeInformation *type = NULL)
+{
+  /* --- Your code here --- */
+  return NULL;
+  /* --- End your code --- */
+}
+```
+
+
 ### Testing Lab 4
 In order to test Lab 4, there exists a test script.
 For more details see the README in the test folder.