Advanced Control Flow

Simulations

The C++ library has a random number generator, which produces numbers that appear to be random.
Calling rand() yields a random number between 0 and RAND_MAX (usually 32767, but implementation dependent).
These numbers actual come from a a very long sequence of numbers computed from fairly simple formulas; they just behave like random numbers.
For that reason they are often called pseudorandom numbers.
The following program produces the exact same output every time the program is run (because the numbers are generated with formulas).
```
int main()
{
   int i;
   for (i = 1; i <= 10; i++)

   {
      int r = rand();
      cout << r << "\n";
   }
   return 0;
}
```