I need a C program code for the following program. I'm attaching the description, Hints (Things to remember) and the sample output for it. PLEASE MAKE SURE THE OUTPUT LOOKS EXACTLY LIKE THE SAMPLE OUTPUT. THANK YOU!

Here are the things to remeber:

Heres the Sample Output:

Description: Write a C program that performs simple encryption or decryption on a four digit integer. The program should prompt the user to enter the one letter command "e" (without quotes) for encryption, "d" for decryption or "t" for terminating the program. If the user wants to encrypt or decrypt, the program should give a prompt asking for a four digit integer, perform the operations, display the result, and repeat the initial prompt. Use the following steps for encryption and decryption Encryption: separate the integer into its 4 digits take the first digit, add 7 to it and then perform a mod 10 operation repeat the same process as above for the other digits swap the first and the third digits swap the second and the fourth digits assemble the digits to get the encrypted number display the encrypted number Decryption: For decryption follow the above process, except that you should add 3 to each digit and then perform a mod 10 operation. See the given outline for the program's interaction with the user. After completing and testing your program, answer the following questions and write your answers as comment at the end of your program. Questions: (1) Explain why when you encrypt "1234", you get a 3-digit number "189". (2) Explain why when you decrypt "189", which is 3 digits, you get "1234", which is the correct asnwer