diff options
Diffstat (limited to 'src')
-rw-r--r-- | src/host.c | 7 |
1 files changed, 5 insertions, 2 deletions
@@ -36,8 +36,11 @@ int main(int argc, char **argv) { char hostname[NI_MAXHOST]; char ip_address[INET6_ADDRSTRLEN]; int ret; - struct in_addr addr; - void *ptr; + + if (argc < 2) { + fprintf(stderr, "Usage: %s <hostname>\n", argv[0]); + return EXIT_FAILURE; + } ret = getaddrinfo(argv[1], NULL, &hints, &result); if (ret != 0) { |