trying to do a function call using a switch case

Question

so I am trying to use a switch case to call a function but every time the program runs it says process has returned 0 for some reason I dont know

https://code.sololearn.com/W7phbf7imRT5

here is the code (I am using code blocks)

Answer 1

Why you copied code to Web file,..? HOW it runs..?
Why not copy to c file and run? See switch cases are fine, may be errors in function implementation..
Check this sample for your switch cases....

https://code.sololearn.com/cwAvbwBgO409/?ref=app