Help random number problem

流氓兔宝宝

Which function in VC is a random number generation function, I used Rand() and SRand() in C, but the effect is not good, I don't know why.

kanubis

What is bad effect?

rsq666

How bad?

rose_neal

srand(time(NULL));
rand();
This effect will be better.

流氓兔宝宝

I used Xiao Xiaoshuai's method, somehow at first a few were okay, but later it didn't change. Is there any other method?

永恒之骑士

How does the host use it, it can't be the same

ty1tr2y3

You can explore and write one by yourself
int rand(int k)//The content in the function can be written casually, give full play to your imagination
{
if(k%2 == 0)
{
int sk = k*231219 + 323;
return sk/23%6000;
}
else
{
int sk = k*2312 + 6323;
return sk/21%6000;
}

}
rand(rand(rand(time(null))));

addforever

What effect is not good?
Isn't lz uniformly random?
If not, use mathematical methods to uniformly randomize to other random methods (such as normal distribution)