move exercises and lectures into subfolders

Exercises/C12/scope_of_variables.c

@@ -0,0 +1,20 @@
+void SampleFunction1 ( int x )
+{	
+	int i,j,k;
+	return;
+}
+
+void SampleFunction2 ( int x )
+{
+	int i,j,k;
+	SampleFunction1(x);
+	return;
+}
+
+// Main : Execution starts here...
+int main(void)
+{
+	int i = 1;
+	SampleFunction2(i);
+	return 0;
+}