Cocos2d-x How to random int , float number

int Global::getRandomNumber(int from ,int to) {
    return (int)from + arc4random() % (to-from+1);
}

/* Random between from float to float */
float Global::randomFloatBetween(float smallNumber ,float bigNumber) {
    float diff = bigNumber - smallNumber;
    return (((float) rand() / RAND_MAX) * diff) + smallNumber;
   
}

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