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[QUOTE="Frank Silvermann, post: 2468782"]
[i][i][i][i][i]
Gosh, this opens up a whole new set of problems for me.  In stddef.h for 
me I have:
/* define the implementation dependent size types */

#ifndef _SIZE_T_DEFINED
typedef unsigned int size_t;
#define _SIZE_T_DEFINED
#endif

,so I would think that making these calls with unsigned ints would be 
alright, but when I tried to do this with RandRange, my return is the 
same every time I run the resulting executable:
#include <stdlib.h>
#include <stdio.h>
#include <time.h>
extern size_t   RandRange(size_t a, size_t b);

/* attribution: CLR */

int main(void)
{

unsigned int a, b, c;
srand(time(NULL));
a = 40;
b = 90;
c = RandRange( a,  b);

printf("return is %u\n", c);
return 0;
}

/* C-FAQ */
size_t          RandRange(size_t a, size_t b)
{
     size_t          c = (size_t) ((double) rand() / ((double) RAND_MAX 
+ 1)
* (b - a));
     return c + a;
}
/* end source */
Furthermore, I don't see how the RHS of the assignment to c would give 
you a number between 'a' and 'b'.  To make matters worse, I was unable 
to find enlightenment in the FAQs.  I appreciate your help, but I'm 
still sunk.  frank[/i][/i][/i][/i][/i]
[/QUOTE]

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