36 lines
1.1 KiB
C++
Executable File
36 lines
1.1 KiB
C++
Executable File
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
|
|
int main(int ac, char *av[])
|
|
{
|
|
int d=10, tmp, i;
|
|
int PNUM = 0;
|
|
|
|
for (i=1; i<ac; i++) {
|
|
if (strcmp(av[i], "-r")==0) // random
|
|
srandom((int) getpid());
|
|
else if (strncmp(av[i], "-s", 2)==0) // set random seed
|
|
srandom(atoi(av[i]+2));
|
|
else if (strcmp(av[i], "-n")==0) // print # of points first
|
|
PNUM=1;
|
|
else if (sscanf(av[i], "%d", &tmp)) // set # of points
|
|
d = tmp;
|
|
else {
|
|
printf("Usage: %s [-r] [-s<S>] [-n] [<D>]\n", av[0]);
|
|
printf(" Output <D> random points ");
|
|
printf("as <D> lines of coordinate pairs.\n");
|
|
printf(" Default <D> is 10.\n");
|
|
printf(" -r\t Randomize. Use getpid() as seed.\n");
|
|
printf(" -s<S>\t Set random seed to <S>.\n");
|
|
printf(" -n\t Write <D> first before the random points.\n");
|
|
exit(-1);
|
|
}
|
|
}
|
|
|
|
if (PNUM)
|
|
printf("%d\n", d);
|
|
for (i=1; i<=d; i++)
|
|
printf("%4d %4d\n", (int) random()%10000, (int) random()%10000);
|
|
}
|