move exercises, lecture examples, labs into subfolders

Exercises/C8/ex3.c

@@ -0,0 +1,14 @@
+#include <stdio.h>
+
+int main() {
+	int input;
+
+	printf("Enter an integer: ");
+	scanf("%d", &input);
+
+	if (!(input >= 0 && input <= 10)) {
+		printf("The number is not in range\n");
+	}
+
+	return 0;
+}