How are characters defined in the C language?

In C language, characters can be defined using the char data type. The specific syntax for defining characters is as follows:

1. Declare a character variable:
2. Character c;
3. Define an array of characters.
4. Define a character array of length 10.
5. Define a pointer to a character.
6. Pointer named ptr.
7. Define a constant character:
8. char ch is equal to the character ‘A’.

It is important to note that characters must be enclosed in single quotation marks and stored in memory in ASCII format. For example, the character ‘A’ corresponds to an ASCII code of 65.