# Enumerated types tutorial

This screen capture (IDA 3.66) shows how IDA handles high level structures. This tutorial shows you how to obtain this result.

![](/files/uJZzTXALdImLk8P5f6Ze)

You can use IDA to interactively define and manipulate enumerated types in the disassembly. Consider this simple sample C program:

```
enum color_t {
    BLACK,          /* dark colors */
    BLUE,
    GREEN,
    CYAN,
    RED,
    MAGENTA,
    BROWN,
    LIGHTGRAY,
    DARKGRAY,           /* light colors */
    LIGHTBLUE,
    LIGHTGREEN,
    LIGHTCYAN,
    LIGHTRED,
    LIGHTMAGENTA,
    YELLOW,
    WHITE
};

enum day_t { MONDAY, TUESDAY, WEDNESDAY, THUSDAY, FRIDAY, SATURDAY, SUNDAY };

enum bool_t { FALSE, TRUE };

int is_suitable_color(day_t day,color_t color) {
  if ( (day == SUNDAY || day == SATURDAY) && color == RED ) return TRUE;
  if ( color == BLACK || color == BLUE ) return TRUE;
  return FALSE;
}
```

In order to use meaningful names instead of numbers, we open the enums window and press insert to define a new enumerated type.

![](/files/spM9HosmIR6pduAkvitZ)


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