> For the complete documentation index, see [llms.txt](https://guide.cronuszen.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://guide.cronuszen.com/gpcscripting/gpc-script-guide/learn-gpc/enumerations.md).

# Enumerations

Enums create related compile-time integer names. Use them for state machines, modes, pages, or schema versions:

{% code title="enum-modes.gpc" %}

```cpp
enum {
    MODE_OFF,       // 0: the first implicit value starts at zero
    MODE_STANDARD,  // 1: implicit values increment by one
    MODE_ALTERNATE, // 2
    MODE_COUNT      // 3
};

int mode;

main {
    if(event_press(PS5_TRIANGLE)) {
        mode = mode + 1;
        if(mode >= MODE_COUNT) mode = MODE_OFF;
    }
}
```

{% endcode %}

An explicit value restarts the sequence from that point:

```cpp
enum {
    PAGE_HOME,       // 0
    PAGE_STATUS,     // 1
    PAGE_EDIT = 10,  // 10: explicitly restart here
    PAGE_SAVE,       // 11
    PAGE_ADMIN = 20, // 20: restart again
    PAGE_DIAGNOSTIC  // 21
};
```

Enum members share the data-symbol namespace with variables, definitions, and const-data names. Do not reuse an enum-member name for one of those declarations.


---

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