// producer

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

FILE *i_init(char *fname, int m = 0);
int i_send(FILE *fp, char *buf);
int i_rcv(FILE *fp, char *buf);

main(int argc, char *argv[])
{
	int i, stat, n;
	char buf[100], rbuf[100];
	FILE *fp = i_init("b.ipc", 1);

	if (fp == NULL) {
		printf("can't open b.ipc\n");
		exit(1);
	}
	n = argc > 1 ? atoi(argv[1]) : 10;
	system("cons b.ipc &");
	for (i = 1; i <= n; i++) {
		sprintf(buf, "message %d", i);
fprintf(stderr, "prod sending '%s'\n", buf);
		stat = i_send(fp, buf);
		if (stat == -1) {
			printf("prod send error %d\n", i);
			exit(1);
		}
		stat = i_rcv(fp, rbuf);
fprintf(stderr, "prod rcvd '%s'\n", rbuf);
		if (stat == -1) {
			printf("prod rcv error %d\n", i);
			exit(1);
		}
	}
	i_send(fp, "done");
}