Why the program doesn't have any output?

Question

When I run the above code, no output is shown? Why is it like this despite the fact I had declared the function?

https://code.sololearn.com/cr0NMyfB3G9s/?ref=app

Answer 1

You never call dollar(), you forward declared dollar() at line 6, and do the same again at line 9. Just call dollar

Line 9:
dollar(); // no `void` before function name

Answer 2

Ipang thank you so much.