In case you experience problems compiling the code, try including <string.h>, <stdlib.h>, and <ctype.h>. If you don't know how to do it, replace the first few lines of dr2.c with this:
Code: Select all
/* Find small drifters against a stable background. 3/20/97 */
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <ctype.h>
#define COUNT 0 /* If true, then periodically print how often */
/* various functions are called. */