↩ revert:

C13-IO/stdio/atoi.c

@@ -1,7 +1,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 
-int main(int argc, char** argv)
+int main(int argc, char **argv)
 {
     char buf[1024];
     int  year = 2014, month = 5, day = 13;