CALCULATOR $$N C :: I want to write a C code that performs the operations in the picture. It would be better if it was in the form of a beautiful painting. It would be nice if it could perform more than one operation by keeping the value found in the form of Ans, as in normal calculators. Keep it simple.

$-$ EXAMPLE:

$8+89+9$

or

sin$50+5$

log$10($I have no idea how to make the base and exponent of this$)+5$