C++

Do the given code by using a flag-controlled while loop

Idea:

Take a flag of type bool (the meaning if this flag is: if E is pressed, then it is True. If any other char is pressed then it is False)

Initially make it False

take an input as char

check if the input is E. If so, then change the flag to True

write the while loop ad shown in the slide

take another input as char inside the while loop

check if the input is E. If so, then change the flag to True

so, next time the while loop will terminate

use clear screen command/function to clear the screen, then show the output, then show the menu again. Search internet to see how to clear screen in C++

Give output for all options (+, -, E, default)