move exercises and lectures into subfolders

Lectures/LC19/ConstHashDefine/ConstHashDefine.c

@@ -0,0 +1,33 @@
+#include <stdio.h>
+
+//macro definition
+#define X 30
+
+//global integer constant
+const int Y = 10;
+
+void func();
+
+int main()
+{
+	//local integer constant`
+	const  int Z = 20;
+
+	printf("Value of X: %d\n", X);
+	printf("Value of Y: %d\n", Y);
+	printf("Value of Z: %d\n", Z);
+
+	func();
+
+  	//Y = 30;
+	Z = 40;
+
+	return 0;
+}
+
+void func()
+{
+	int Z = 40;
+	printf("Value of Z in function = %d\n", Z);
+	//Y = 30;
+}