#include #include #include #include #include "utils.h" #define FIFO_PATH "/tmp/ex-fifo" int main(int argc, char *argv[]) { char buffer[100]; int n; int fd = open(FIFO_PATH, O_WRONLY); exit_if(fd == -1, FIFO_PATH); printf("file %s is open for write\n", FIFO_PATH); n = snprintf(buffer, sizeof(buffer), "I'm the child %d, of %d\n", getpid(), getppid()); write(fd, buffer, n); printf("end of writer\n"); return 0; }