Give me simple code ideas for beginners.

Question

Make it simple as possible. As you can.
I'm teaching a few beginners but I don't really know what kind of exercises I should give them.

If you wounder about the language.
C#, java, javascript,

Answer 1

you should ask them to write the algorithm of friendship ; they will probably fall in love of coding and you :)

https://youtu.be/k0xgjUhEG3U

Answer 2

- A simple calculator with basic operators (+, -, *, /)

- A Vendor machine for snacks or drinks. The Programm has to greet the customer, then the customer can choose what he want, has to pay for it and gets his change and item.