move exercises, lecture examples, labs into subfolders

Exercises/C16/ex3.c

@@ -0,0 +1,23 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+int main(void)
+{
+    // Declare an integer array and an integer pointer
+    int *pData;
+    int datlen;
+
+    printf("Length of data to be allocated: ");
+    scanf("%d", &datlen);
+
+    // Using malloc
+    pData = malloc ( datlen * sizeof (int));
+
+    for (int i = 0; i < datlen; i++) {
+	    pData[i] = i;
+	    printf("%d %d\n", i, i);
+    }
+
+    free(pData);
+    return 0;   // Exit
+}