How to represent whitespace characters in the C programming language?

In C language, blank space character can be represented using the space key (ASCII code 32) or the escape character \s. For example, both of the following methods can be used to represent the blank space character:

1. Press the space bar:

char space = ' ';

1. I only need one choice.

char space = '\s';

It is important to note that the escape character \s does not exist in the C language, so the second method is actually incorrect. Spaces should be represented using the space key.