void level_change(void);

void level_change(bool skip_ability_increase = false);

void level_change(void)

void level_change(bool skip_ability_increase)

            if (!(you.experience_level % 3))

            if (!(you.experience_level % 3) && !skip_ability_increase)

void lose_level(void)

void lose_level()

    if (Options.show_more_prompt)

    if (Options.show_more_prompt && !suppress_messages)

void debug_set_xl();

#include "ouch.h"

static void debug_uptick_xl(int newxl)
{
    while (newxl > you.experience_level)
    {
        you.experience = 1 + exp_needed( 2 + you.experience_level );
        level_change(true);
    }
}
static void debug_downtick_xl(int newxl)
{
    you.hp = you.hp_max;
    while (newxl < you.experience_level)
        lose_level();
}
void debug_set_xl()
{
    mprf(MSGCH_PROMPT, "Enter new experience level: ");
    char buf[30];
    if (cancelable_get_line(buf, sizeof buf))
    {
        canned_msg(MSG_OK);
        return;
    }
    const int newxl = atoi(buf);
    if (newxl < 1 || newxl > 27 || newxl == you.experience_level)
    {
        canned_msg(MSG_OK);
        return;
    }
    no_messages mx;
    if (newxl < you.experience_level)
        debug_downtick_xl(newxl);
    else
        debug_uptick_xl(newxl);
}

                       "x      : gain an experience level\n"

                       "t      : tweak object properties\n",

                       "t      : tweak object properties\n"
                       "T      : make a trap\n"
                       "v      : show gold value of an item\n",

                       "T      : make a trap\n"
                       "v      : show gold value of an item\n"

                       "x      : gain an experience level\n"
                       "Ctrl-X : change experience level\n"

                       "~/\"    : go to a specific level\n"

                       "~      : go to a specific level\n"

                       "\"      : list monsters\n"

        break;
    case CONTROL('X'):
        debug_set_xl();