[Basicz]

Maybe an ' useless ' function =D
But

pawn Код:

stock getPlayerFirstRPName( playerid, bool: oneCharAllowed = false )
{
    new
        pName[ MAX_PLAYER_NAME ]
    ;
    
    GetPlayerName( playerid, szName, sizeof szName );
    
    if ( !( 'A' <= pName[ 0 ] <= 'Z' ) ) // if ( !( szName[ 0 ] >= 'A'  && szName[ 0 ] <= 'Z' ) )
        return 0;

    if ( !oneCharAllowed )
    {
        if ( szName[ 1 ] == '_' )
            return 0;
    }
    
    new
        iPos = strfind( szName, "_" )
    ;
    
    strdel( szName, iPos, strlen( szName ) );
    
    return szName;
}

The function was not tested; but the method was.

Lorenc_ returns Lorenc
Avada_Kedavra_Lumos returns Avada ( This was tested with the method; the string size was not 24. )
Police_A returns Police

IMPROVED Version by RyDeR'

pawn Код:

stock getPlayerFirstRPName( playerid, bool: oneCharAllowed = false )
{
    new
        pName[ MAX_PLAYER_NAME ]
    ;
    
    GetPlayerName( playerid, szName, sizeof szName );
    
    if ( !( 'A' <= pName[ 0 ] <= 'Z' ) ) // if ( !( szName[ 0 ] >= 'A'  && szName[ 0 ] <= 'Z' ) )
        return 0;

    if ( !oneCharAllowed )
    {
        if ( szName[ 1 ] == '_' )
            return 0;
    }
    
    new
        iPos = strfind( szName, "_" )
    ;
    
    if ( iPos == -1 )
            szName[ iPos ] = EOS;
    
    return szName;
}