#include <stdio.h>
#include <string.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>

// C program to implement one side of FIFO
// This side writes first, then reads

int main()
{
	int fd;

	// FIFO file path
	char * myfifo = "/tmp/myfifo";

	// Creating the named file(FIFO)
	// mkfifo(<pathname>, <permission>)
	mkfifo(myfifo, 0666);

	char arr1[80], arr2[80];
	while (1)
	{
		// Open FIFO for write only
		fd = open(myfifo, O_WRONLY);

		// Take an input arr2ing from user.
		// 80 is maximum length
		fgets(arr2, 80, stdin);

		// Write the input arr2ing on FIFO
		// and close it
		write(fd, arr2, strlen(arr2)+1);
		close(fd);

		// Open FIFO for Read only
		fd = open(myfifo, O_RDONLY);

		// Read from FIFO
		read(fd, arr1, sizeof(arr1));

		// Print the read message
		printf("User 2: %s\n", arr1);
		close(fd);
	}
	return 0;
}