Обновлён пример

program.own

@@ -62,4 +62,23 @@ print arr[4][1] + "\n"
 
 print "\n\n"
 array = newarray(2, 2, 2, 2)
-print array
+print array
+
+add = def(a,b) return a+b
+sub = def(a,b) return a-b
+mul = def(a,b) return a*b
+div = def(a,b) return a/b
+cube = def(x) return x*mul(x, x)
+print "\n\n"
+print mul(8, 5)
+print "\n"
+print cube(2)
+
+functions = [add, sub, mul, div]
+def function(f, a, b) return f(a, b)
+for i = 0, i < 4, i = i + 1 {
+    print "\n"
+    print functions[i]
+    print "\n"
+    print function(functions[i], 6, 3)
+}