[Gammix]

Its easy if you use this include(it already have this function: GetPlayerSkillLevel(playerid, skill);)
Download "playerfuncs.inc" (link: https://sampforum.blast.hk/showthread.php?tid=573961).

So you can increase the player skill level on every kill with getting the old skill level +

pawn Код:

public OnPlayerDeath(playerid, killerid, reason)
{
    if(killerid != INVALID_PLAYER_ID)
    {
        new skill = 0;
        switch(GetPlayerWeapon(killerid))
        {
            case 22: skill = WEAPONSKILL_PISTOL;
            case 23: skill = WEAPONSKILL_PISTOL_SILENCED;
            //... add all other types you want
        }
        SetPlayerSkillLevel(killerid, skill, GetPlayerSkillLevel(killerid, skill) + 10);
    }
    return 1;
}

For command part, if you are using zcmd:

pawn Код:

CMD:weaponskills(playerid)
{
    new string[144];
    format(string, sizeof(string) "Pistol: %i/1000", GetPlayerSkillLevel(playerid, WEAPONSKILL_PISTOL));//this is for pistol, it will show the pistol skills in client message form
    SendClientMessage(playerid, -1, string);
    //...add more if you want
    return 1;
}