$5\mathrm{.}26$ LAB: Password modifier

Many user$-$created passwords are simple and easy to guess. Write a program that takes a simple password and makes it stronger by replacing characters using the key below, and by appending $"!"$ to the end of the input string.

i becomes $1$

a becomes @

m becomes M

B becomes $8$

s becomes $

Ex: If the input is:

mypassword

the output is:

Myp@$$word!