Write a program that takes a positive (or zero) number expressed in base 10, and displays it in base 16 (with lowercase letters) followed by a newline (`'\n'`).
Write a program that takes a positive (or zero) number expressed in base 10, and displays it in base 16 (with lowercase letters) followed by a newline (`'\n'`).
- If the number of parameters is different from 1, the program displays a newline.
- If the number of parameters is different from 1, the program displays a newline.
- Error cases have to be handled as shown in the example below.