add void help function

1 files changed, 1 insertions, 1 deletions

diff --git a/stats.c b/stats.c
index 335346f..81cdc33 100644
--- a/stats.c
+++ b/stats.c
@@ -8,7 +8,7 @@ enum MODE {
   MODE_DIFF
 };
 
-void help(){
+void help(void){
     printf("Usage: stats <numbers>\n");
     exit(1);
 }