Cleanup dead/useless code

day04/ex1-c.c

@@ -103,20 +103,6 @@ int valid_passport()
      return valid;
 }
 
-char *my_getkeyZOBI(str)            /* search string before ':' */
-     char *str;
-{
-     char *p=str;
-
-     while (*str++ == ' ')      /* skip spaces */
-          ;
-     p=str;
-     while (*p && *p++ != ':')  /* skip spaces */
-          ;
-     *p='\0';
-     return my_strlen(str) ? str: NULL;
-}
-
 int main(ac, av)
      char **av;
 {

day04/ex2-c.c

@@ -204,20 +204,6 @@ int valid_passport()
     return valid;
 }
 
-char *my_getkeyZOBI(str)            /* search string before ':' */
-    char *str;
-{
-    char *p=str;
-
-    while (*str++ == ' ')      /* skip spaces */
-        ;
-    p=str;
-    while (*p && *p++ != ':')  /* skip spaces */
-        ;
-    *p='\0';
-    return my_strlen(str) ? str: NULL;
-}
-
 int main(ac, av)
     char **av;
 {

day10/ex1-c.c

@@ -59,7 +59,7 @@ void print_list(list)
         printf("[%u] %llu\n", i, *(ptr+i));
 }
 
-static struct list *add_val(list, val)
+struct list *add_val(list, val)
     struct list *list;
     unsigned long long val;
 {

day10/ex2-c.c

@@ -59,7 +59,7 @@ void print_list(list)
         printf("[%u] %llu\n", i, *(ptr+i));
 }
 
-static struct list *add_val(list, val)
+struct list *add_val(list, val)
     struct list *list;
     unsigned long long val;
 {