What is the '\' operator in the C language?

Question

The example that I am looking at is like this:

#define CONTROL_MEM_SIZE    ((CONTROL_ITEM_SIZE * CONTROL_QUEUE_SIZE) +   \\
                            portQ         


        

Answer 1

The \ character at the end of a line is a line continuation.

It tells the preprocessor to ignore the newline and consider the following line as part of this one.

Compare to the VBScript _ line continuation character.