Lab 5: CASIO-fx991

Please name your code as lab5.c and compress it to a zip file to upload.
Don't forget to submit the code to Canvas!

Problem
#1: Lab 5- Interpreter Milestone 1: able to calculate an expression
#2: Lab 5- Interpreter Milestone 2: able to store variables
#3: Lab 5- Interpreter Milestone 3: able to suppress input

Homework Introduction