Declension for words in russian language depending on count between current word. More about declension: http://en.wikipedia.org/wiki/Russian_grammar#Declension_of_numerals

Objective-C declension in russian language

- (NSString *)stringFromCount:(NSUInteger)count
{
    NSString *days = nil;
    NSUInteger modulo10 = count % 10;
    if (modulo10 == 1)
    {
        days = NSLocalizedString(@"день", nil);
    }
    if (modulo10 == 2 || modulo10 == 3 || modulo10 == 4)
    {
        days = NSLocalizedString(@"дня", nil);
    }
    if (modulo10 >= 5 || modulo10 == 0 || (count >= 11 && count <= 14))
    {
        days = NSLocalizedString(@"дней", nil);
    }
    return [NSString stringWithFormat:@"%i %@", count, days];
}