Create a scientific calculator as given in windows operating system. Add all the possibilities for evaluation.

Question

User Input Should be 1 or 2 or N number of input.
According to user's choice.
2 options should be present
One : for clearing
Second : for multiple operation
Please help me in debugging this program.

Answer 1

https://code.sololearn.com/cDS398GmxnOt/?ref=app
https://code.sololearn.com/cpcHwKXsSOiP/?ref=app