diff --git a/ex15.c b/ex15.c
index c890f92..1853556 100644
--- a/ex15.c
+++ b/ex15.c
@@ -2,15 +2,17 @@
 
 int main(int argc, char *argv[])
 {
+    // create two arrays we care about
     int ages[] = {23, 43, 12, 89, 2};
     char *names[] = {
         "Alan", "Frank",
         "Mary", "John", "Lisa"
     };
-
+    // safely get the size of ages
     int count = sizeof(ages) / sizeof(int);
     int i = 0;
 
+    // first way using indexing
     for(i = 0; i < count; i++) {
         printf("%s has %d years alive.\n",
                 names[i], ages[i]);
@@ -18,9 +20,11 @@ int main(int argc, char *argv[])
 
     printf("---\n");
 
+    // setup the pointers to the start of the arrays
     int *cur_age = ages;
     char **cur_name = names;
 
+    // second way using pointers
     for(i = 0; i < count; i++) {
         printf("%s is %d years old.\n",
                 *(cur_name+i), *(cur_age+i));
@@ -28,6 +32,7 @@ int main(int argc, char *argv[])
 
     printf("---\n");
 
+    // third way, pointers are just arrays
     for(i = 0; i < count; i++) {
         printf("%s is %d years old again.\n",
                 cur_name[i], cur_age[i]);
@@ -35,6 +40,7 @@ int main(int argc, char *argv[])
 
     printf("---\n");
 
+    // fourth way with pointers in a stupid complex way
     for(cur_name = names, cur_age = ages;
             (cur_age - ages) < count;
             cur_name++, cur_age++)