Packing two characters to an integer

Question

I have written a code to pack two characters to an integer; which should output in both decimal and binary formats.

The code compiled successfully, but the problem is,

Answer 1

scanf("%c",&character2);

picks up the newline character that was left on the input stream when you read the first character.

Change it to:

scanf(" %c",&character2);

Update In response to the comment by @user3615120

Let's say you entered a and Enter when you wanted to read the first character. At that time, the input stream has two characters in it: 'a' and '\n'. When the line

scanf("%c",&character1);

gets executed, 'a' is read and stored in character1. The '\n' is still left in the input stream.

When

scanf("%c",&character2);

is executed, the '\n' is read and stored in character2. When you change that line to

scanf(" %c",&character2);

the white spaces that are left in the stream is discarded. The first non-whitespace character is read and stored in character2.