Can you explain the principle of using the newline separator in the C language and where it is applied?

In C#, the line continuation character is the backslash \ at the end of a line, which allows long code lines to be continued on the next line without breaking the syntax.

Example:

string longString = "This is a very long string, " +
                    "which continues on the next line.";

However, in C# there is no special character for explicit line continuation like in some other languages (e.g., C or Python). Usually, string concatenation operator + is used, or the expression is split across multiple lines.

If we are talking about the C language (not C#), then the line continuation is the backslash \ at the end of a line, which tells the compiler that the string continues on the next line:

#define MAX_LENGTH 100 \
                   + 50

In C#, such a necessity does not exist, as line breaks in code are allowed without special characters.