C Simple Program help

[Xerco]

Hi, i need help with a C program I need to generate 3 random numbers between 0 and 255 and then find the largest and smallest of these 3 numbers.

But my output is massively over the expected output. What am I doing wrong? Also should be be using srand? Would it stay within 255?

Thanks for your help heres what iv done so far.

void main(void)
{
   int num1, num2, num3, max, min;

   num1=gen_rand();
   num2=gen_rand();
   num3=gen_rand();

   max=find_max(num1, num2, num3);
   min=find_min(num1, num2, num3);

   printf("Random numbers are %d, %d, and %d\n", num1, num2, num3);

   printf("Largest is %d.  Smallest is %d.\n", max, min);

}

int gen_rand(void)
/* returns random number in range of 0 to 255 */
{
   int n;
   n=random(256);  /* n is random number in range of 0 - 255 */
   return(n);
}

int find_max( int x, int y, int z)
/* returns largest number */
{
   int max;
   if ((x>=y) && (x>=z))
   {
	 max = x;
   }
   else if ((y>=x) && (y>=z))
   {
	 max = y;
   }
   else
   {
	 max = z;
   }
   return(max);
}

int find_min( int x, int y, int z)
/* returns smallest number */
{
   int min;
   if ((x<=y) && (x<=z))
   {
	 min = x;
   }
   else if ((y<=x) && (y<=z))
   {
	 min = y;
   }
   else
   {
	 min = y;
   }
   return(min);
}