Thread: how to generate a random integer number between 0 and 9

There's an FAQ on it: http://faq.cprogramming.com/cgi-bin/...&id=1043284385

The short answer is: seed the random number with srand() (and probably time()); and get a random number with rand(), restricting its value to 10 with %.

Code:

#include <time.h>  /* for time() */
#include <stdlib.h>  /* for rand() and srand() */

int n;
srand(time(NULL));
n = rand() % 10;  /* generate a number from 0 - 9 */

BTW, only call srand() once.