random() and srandom(int x) are now available in legOS. To use them, just call srandom(int x) at some point during your program startup. x is a "seed", which allows you to get the same sequence of numbers if you so desire (by passing the same seed) or to generate more truly "random" numbers by feeding in, for example, LIGHT_1. Be aware: unlike the "standard" implementation of these two functions, there is no "default" seed, so if you don't call srandom() at least once, random() will return the same number over and over again.
 

 //! generate a random number
/*! The random() function returns successive pseudo-random numbers 
 *  \return a random number in the range from 0 to RAND_MAX
 */
extern long int random(void);
//! seed the random number generator
/*! The srandom() function sets its argument as the seed for a new sequence
 *  of pseudo-random integers to be returned by random().  These  sequences
 *  are  repeatable  by  calling srandom() with the same seed value.  If no
 *  seed value is provided, the random() function is  automatically  seeded
 *  with a value of 1.
 *  \param seed 
 *  \return Nothing
 */
extern void srandom(unsigned int seed);

 void main{
srandom(int x); 
long int k = random();
}

 void main{
int x = 27;
void srandom(x); 
random();
}

 void main{
random();
k = srandom(27);}

 Internal compiler error.
Please submit a full bug report.

#include <cstdlib>
#include <ctime>
#include <iostream>
 
int main()
{
  std::srand ( (unsigned)std::time ( 0 ) );
 
  int r = rand() % 28;
 
  std::cout<< r <<'\n';
}

int main()
{
   std::srand ( (unsigned)std::time ( 0 ) );
   int r = rand() % 28;
 
   std::cout<< r <<'\n';
}

int x = 27;
		long int r = random(srandom ( (unsigned) x));

too many arguments to function 'long int random()'

// generate 10 random numbers
srandom( time(0) );
for(int i = 0; i < 10; i++)
   cout << random() << "\n";

#include time.h

#include <ctime>