adding cs236

cs236/lexer/token.cpp

@@ -0,0 +1,11 @@
+#include "token.h"
+
+token::token(string type, string character, int line_num) :           
+                        type(type), character(character), line_num(line_num) {}
+
+ostream & operator<<(ostream & os, token tk) {
+    os << "(" << tk.type                          
+    << ",\"" << tk.character                      
+    << "\"," << tk.line_num << ")";                                            
+    return os;                                             
+}