Extra credits: code a complete c program that

Extra credits: code a complete C program that uses getch() to enter digits only, make up 2 numbers of no more than 3 digits, add them together in the most primitive way

example: a set of getch() will input 3, 6 , and 8

then the plus sign

then another set of 3 digits example: 5, 7, 5

in this case, you will be calculating the following:
368
+
575
————
=
the design for this extra credits is up to you.”

This program is to find the sum of 2 numbers input by user using getch() function.