1 #include <sys/types.h>
2 #include <sys/param.h>
3 #include <sys/socket.h>
4 #include <netinet/in.h>
5 #include <unistd.h>
6 
main(void)7 int main(void) {
8   int s;
9 
10   s =socket(AF_INET, SOCK_STREAM, 0);
11   return(close(s));
12 }
13