Solution Library

MATLAB Script that takes User Inputs as Strings and Perform the given Operations.


This problem implements a simple calculator using RPN notation. The application will consist of user input, stack operation, and displaying the result. RPN calculations work in conjunction with a stack. Every time a user enters a number, the number should be pushed on the stack. When the user enters a function, the top element or elements of the stack are used in the calculation and the result is placed on the stack.

a) Create a MATLAB class that implements a stack with the following methods: Push, Pop, is Empty, GetContents, and a constructor. The GetContents method is needed to display the elements of the stack.

 b) Write a script that will take user inputs as strings and perform the following operations:

i) If the user enters a number, push it on the stack. A function needs to be written to determine if a string is valid number. The function is strprop is a good starting point.

ii) If the user enters a string, treat it like a function and evaluate it using the number on the top of the stack, and push the result on the stack. The only functions allowed are +,-,*,/, sin, cos, tan, and exp. The calculator should also support the following constants: pi and e. Look into the switch statement.

c) Always display the contents of the top 3 elements of the stack prior to asking for input.

 Example: 2: 0

 1: -1.03

0: 2.2


d) Run the code with the following inputs. Show the stack after each step.

i) 2 2 + 3 *

ii) pi 2 / sin

 iii) 2 4 + 2 / exp

 iv) 2 3 4 + *



This question belongs to MATLAB software and discusses about application of MATLAB in operations management and to write a script that will take user inputs as strings and perform the given operations.





Download Full Solution


  • HWA

    this is a very good website

  • HWA

    I have 50 questions for the same test your page is showing only 28

  • HWA

    hi can you please help or guide me to answer my assignments. thanks

  • HWA

    hi can anyone help or guide me to my assignments. thanks

  • HWA

  • HWA

    This solution is perfect ...thanks

  • HWA

    Hello Allison,I love the 2nd image that you did! I also, had never heard of SumoPaint, is something that I will have to exolpre a bit! I understand completely the 52 (or so) youtube videos that you probably watched. Sometimes they have what you want, sometimes they don't! However, it is always satisfying when you are able to produce something that you have taught yourself. Great job!Debra 0 likes

  • HWA

    Perfect bank of solution. 

  • HWA

    great !

  • HWA
    Paul Brandon-Fritzius

    thanks for the quick response. the solution looks good. :)

  • HWA
    tina Johnson

    thnx for the answer. it was perfect. just the way i wanted it. 

  • HWA

    works fine.