diff --git a/c.html.markdown b/c.html.markdown
index c6fee5d7..96f253b7 100644
--- a/c.html.markdown
+++ b/c.html.markdown
@@ -98,6 +98,10 @@ int main() {
     unsigned int ux_int;
     unsigned long long ux_long_long;
 
+    // chars inside single quotes '*' are ASCII versions of  
+    '0' //==> 48 on the ASCII table. 
+    'A' //==> 65 on the ASCII table. 
+
     // sizeof(T) gives you the size of a variable with type T in bytes
     // sizeof(obj) yields the size of the expression (variable, literal, etc.).
     printf("%zu\n", sizeof(int)); // => 4 (on most machines with 4-byte words)