Many programming languages have special characters that just can not be output.
For example, commonly used special characters are backslash (\), quotation marks (") and apostrophes (')
Note that a regular slash (/) is not a special character!
To output such characters, we put a \ in front of each of them. That is, if we want to display the sign \, then in the output operator it is necessary to write \\
REMEMBER
To display the characters \, ", ', you must put a \ in front of them
Let's practice to output such characters on the screen.