9. Write a program to model a simple calculator. Each data line should consist o

Question

9. Write a program to model a simple calculator. Each data line should
consist of the next operation to be performed from the list below and
the right operand. Assume the left operand is the accumulator value
(initial value of 0). You need a function scan_data with two output
parameters that returns the operator and right operand scanned from a
data line. You need a function do_next _ op that performs the required
operation. do_next_op has two input parameters (the operator and
operand) and one input/ output parameter (the accumulator). The valid
operators are:

+ add
- subtract
* multiply
/ divide
^ power (raise left operand to power of right operand)
q quit

Your calculator should display the accumulator value after each opera-
tion. A sample run follows.

+ 5.0
result so far is 5.0
^2
result so far is 25.0
/ 2.0
result so far is 12.5
q 0
final result is 12.5

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