move exercises and lectures into subfolders

Lectures/LC19/Enum/enum.c

@@ -0,0 +1,24 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+int main(void)
+{
+ 
+	 /* Set up our enumerated type */
+	 enum Days { Mon, Tue, Wed, Thu, Fri, Sat, Sun };
+	 
+	 /* If we wish, we can set the base level */
+	 //enum Days { Mon = 1 , Tue, Wed, Thu, Fri, Sat, Sun };
+									
+	 /* Create a variable that can take values of this type */
+	 enum Days DOW;
+
+	 /* Set variable equal to one of these days */ 
+	 DOW = Sun;
+	 
+	 /* And print the assigned value */ 
+	 printf ("\nThe value assigned to Sun is %d ",DOW);
+
+  
+ return 0;
+}