Merge pull request #1512 from awalGarg/patch-2

[c/en] clarify common tripping point of newbies

c.html.markdown

@@ -76,6 +76,9 @@ int main (int argc, char** argv)
   ///////////////////////////////////////
   // Types
   ///////////////////////////////////////
+  
+  // All variables MUST be declared at the top of the current block scope
+  // we declare them dynamically along the code for the sake of the tutorial
 
   // ints are usually 4 bytes
   int x_int = 0;