Convert Int token type to Number

src/include/tokenize.h

@@ -4,11 +4,11 @@
 #include <vector>
 using namespace std;
 
-enum class TokenType { Type, Int, Plus, Star, Slash, Minus, Equal, Semicolon, LParenthese, RParenthese };
+enum class TokenType { Type, Number, Plus, Star, Slash, Minus, Equal, Semicolon, LParenthese, RParenthese };
 enum class Type { Int };
 
 union TokenData {
-    int integer;
+    double number;
     Type type;
 };