#include #include #include typedef struct { double x, y, z; } Vec; void usage(void) { fprint(2, "usage: %s [file]\n", argv0); exits("usage"); } void main(int argc, char *argv[]) { Biobuf *bin; Vec v; int fd, r; fd = 0; ARGBEGIN{ default: usage(); }ARGEND; if(argc > 1) usage(); else if(argc == 1){ fd = open(argv[0], OREAD); if(fd < 0) sysfatal("open: %r"); } bin = Bfdopen(fd, OREAD); if(bin == nil) sysfatal("Bfdopen: %r"); r = Bgetd(bin, &v.x); print("got %g r=%d\n", v.x, r); r = Bgetd(bin, &v.y); print("got %g r=%d\n", v.y, r); r = Bgetd(bin, &v.z); print("got %g r=%d\n", v.z, r); Bterm(bin); exits(0); }