(SOLVED) Random returning same value

cocos2d-x C++
#1

Im trying to generate a lot of objects that contain randomized sprite.
But it returns the same image on all object.

the random works, but all the 70 items always have the same image (second random always same with the first).

randomItem(Item* pItem)

    srand(time(0));
    switch((rand() % 10) + 1)
    {
    case 1 :
    pItem->updateAll("Apple.png","Apple");
    break;
    case 2 :
    pItem->updateAll("Basket1.png","Basket");
    break;
    //case ...

SOLVED

the srand(time(0)) should be called once, so I put it out the loop.

#2

I think, better use the arc4random() for generating random numbers.

#3

arc4random() is an apple/iphone specific function isn’t it?
Whereas rand() is c function