prand2.c

#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <unistd.h>

int main(void)
{
	int i;
	time_t tick;

	printf("random() function examples\n");
	printf("no seed:         ");
	for(i = 0; i < 5; i++)
		printf("%10ld ", random());
	putchar('\n');

	(void) srand(1);
	printf("seed 1:          ");
	for(i = 0; i < 5; i++)
		printf("%10ld ", random());
	putchar('\n');

	sleep(1);

	tick = time(NULL);
	printf("seed %ld: ", tick);
	(void) srand((unsigned int) tick);
	for(i = 0; i < 5; i++)
		printf("%10ld ", random());
	putchar('\n');

	sleep(1);

	tick = time(NULL);
	printf("seed %ld: ", tick);
	(void) srandom((unsigned int) tick);
	for(i = 0; i < 5; i++)
		printf("%10ld ", random());
	putchar('\n');

	return(0);
}

Matt Bishop Office: 2209 Watershed Sciences Phone: +1 (530) 752-8060 Email: mabishop@ucdavis.edu

ECS 36A, Programming & Problem Solving Version of April 2, 2024 at 12:13PM

You can get the raw source code here.