Why is the sololearn C++ compiler always not giving expected results?

Question

I have tried multiple times on the C++ compiler to do my code but where input is required it does nothing makes my code look like I've done nothing in my Calculator.cpp code

Answer 1

Can you link your code here?

Answer 2

Code.Twister
You need to add multiple input on different line like.

1 for switch case
2
3

Your ans will be 5

Answer 3

See this to know how input is handled by sololearn ( and many other online server based IDEs) 👇
https://code.sololearn.com/WhiNb9BkJUVC/?ref=app