Compute the following by hand $($without calculator$)$

and show your computation:

a$)15+26=($mod $12)$

b$)719=($mod $26)$

c$)24+14=($mod $26)$

And Now Write a program which implements a modular addition and

a modular subtraction. For simplicity, you may fix the modulus to be $26.$ A modular addition will be

implemented as a function m$\_$add$($a$,$b$)$ which take integers $$a$$ and $$b$$ as inputs and outputs

a $+$ b $($mod $26).$ For simplicity, you may assume that a$,$b $\{0,1,...,25\}.$ Similarly, a function

m$\_$sub$($a$,$b$)$ will implement a $-$ b $($mod $26).$ Your submission must include the code of your program

$($enclosed as a separate file$)$ as well as screenshots $($included into the homework report$)$ showing

test runs for the values from Question $1$ items $($b$)$ and $($c$)$