examples/decode_pmt.c: Print usage information on wrong number of commandline arguments

19e7cd13 · Jean-Paul Saman · 913cb647 · 19e7cd13
Commit 19e7cd13 authored Dec 10, 2015 by Jean-Paul Saman
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Showing with 4 additions and 2 deletions

examples/decode_pmt.c examples/decode_pmt.c +4 -2

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--- a/examples/decode_pmt.c
+++ b/examples/decode_pmt.c
@@ -265,8 +265,10 @@ int main(int i_argc, char* pa_argv[])
  bool b_ok;
  uint16_t i_program_number, i_pmt_pid;

-  if (i_argc != 4)
-    return ret;
+  if (i_argc != 4) {
+      fprintf(stderr, "Usage: decode_pmt <file> <program nummer> <pmt pid>\n");
+      return ret;
+  }

  i_fd = open(pa_argv[1], 0);
  if (i_fd < 0)