Seemingly finish the assignment.

Makefile

@@ -1,7 +1,7 @@
 all: scan
 
 scan: main.cpp scanner.cpp parser.cpp
-	g++ main.cpp scanner.cpp parser.cpp -o scan
+	g++ -std=c++11 main.cpp scanner.cpp parser.cpp -o scan
 
 scanner.cpp: scanner.l
 	flex -o scanner.cpp scanner.l

parser.y

@@ -7,6 +7,7 @@
 
 %}
 
+%token TEOF
 %token INDENT
 %token DEDENT
 %token NEWLINE
@@ -78,12 +79,27 @@ void yyerror(const char* s) {
 
 std::set<std::string> varset;
 
+void print_standard(std::string* str) {
+    std::cout << "#include <iostream>" << std::endl;
+    std::cout << "int main() {" << std::endl;
+    for(auto& name : varset) {
+        std::cout << "double " << name << ";" << std::endl;
+    }
+    std::cout << "    " << *str << std::endl;
+    for(auto& name : varset) {
+        std::cout << "    std::cout << \"" << name << ": \" << " << name << "<< std::endl;" << std::endl;
+    }
+    std::cout << "}";
+
+    delete str;
+}
+
 %}
 
 %%
 
 program
-    : stmts { std::cout << *$1 << std::endl; $$ = $1; }
+    : stmts { print_standard($1); } TEOF
     ;
 
 stmts

scanner.l

@@ -26,8 +26,7 @@ std::stack<int> _indent_stack;
 yypstate* state = yypstate_new();
 
 #define PUSH_TOKEN(i, str) do { \
-    std::cout << i << ", " << str << std::endl; \
-    YYSTYPE temp = str; \
+    YYSTYPE temp = new std::string(str); \
     int s = yypush_parse(state, i, &temp); \
     if (s != YYPUSH_MORE) { \
         yypstate_delete(state); \
@@ -125,6 +124,7 @@ yypstate* state = yypstate_new();
                   _indent_stack.pop();
                   PUSH_TOKEN(DEDENT, "");
                 }
+                PUSH_TOKEN(TEOF, "");
                 yyterminate();
               }
 
@@ -142,39 +142,39 @@ yypstate* state = yypstate_new();
 "return"      { PUSH_TOKEN(RETURN, ""); }
 "while"       { PUSH_TOKEN(WHILE, ""); }
 
-"True"        { PUSH_TOKEN(BOOLEAN, "True"); }
-"False"       { PUSH_TOKEN(BOOLEAN, "True"); }
+"True"        { PUSH_TOKEN(BOOLEAN, "true"); }
+"False"       { PUSH_TOKEN(BOOLEAN, "false"); }
 
 [a-zA-Z_][a-zA-Z0-9_]*  {
-                          PUSH_TOKEN(IDENTIFIER, "");
+                          PUSH_TOKEN(IDENTIFIER, yytext);
                         }
 
 -?[0-9]*"."[0-9]+       {
-                          PUSH_TOKEN(FLOAT, "");
+                          PUSH_TOKEN(FLOAT, yytext);
                         }
 
 -?[0-9]+      {
-                PUSH_TOKEN(INTEGER, "");
+                PUSH_TOKEN(INTEGER, yytext);
               }
 
-"="           { PUSH_TOKEN(ASSIGN, ""); }
-"+"           { PUSH_TOKEN(PLUS, ""); }
-"-"           { PUSH_TOKEN(MINUS, ""); }
-"*"           { PUSH_TOKEN(TIMES, ""); }
-"/"           { PUSH_TOKEN(DIVIDEDBY, ""); }
+"="           { PUSH_TOKEN(ASSIGN, yytext); }
+"+"           { PUSH_TOKEN(PLUS, yytext); }
+"-"           { PUSH_TOKEN(MINUS, yytext); }
+"*"           { PUSH_TOKEN(TIMES, yytext); }
+"/"           { PUSH_TOKEN(DIVIDEDBY, yytext); }
 
-"=="          { PUSH_TOKEN(EQ, ""); }
-"!="          { PUSH_TOKEN(NEQ, ""); }
-">"           { PUSH_TOKEN(GT, ""); }
-">="          { PUSH_TOKEN(GTE, ""); }
-"<"           { PUSH_TOKEN(LT, ""); }
-"<="          { PUSH_TOKEN(LTE, ""); }
+"=="          { PUSH_TOKEN(EQ, yytext); }
+"!="          { PUSH_TOKEN(NEQ, yytext); }
+">"           { PUSH_TOKEN(GT, yytext); }
+">="          { PUSH_TOKEN(GTE, yytext); }
+"<"           { PUSH_TOKEN(LT, yytext); }
+"<="          { PUSH_TOKEN(LTE, yytext); }
 
-"("           { PUSH_TOKEN(LPAREN, ""); }
-")"           { PUSH_TOKEN(RPAREN, ""); }
+"("           { PUSH_TOKEN(LPAREN, yytext); }
+")"           { PUSH_TOKEN(RPAREN, yytext); }
 
-","           { PUSH_TOKEN(COMMA, ""); }
-":"           { PUSH_TOKEN(COLON, ""); }
+","           { PUSH_TOKEN(COMMA, yytext); }
+":"           { PUSH_TOKEN(COLON, yytext); }
 
 .             {
                 std::cerr << "Unrecognized token on line " << yylineno << ": "