Can a bitwise #define be used to assign an integer?

[Rob Singer]

For example, suppose I have this:

#define TYPE_4_ERROR (1<<2)
int error_number;

error_number = TYPE_4_ERROR;

Do I have the value of decimal 4 in error_number or do I have something else?

Thank you.

[horace1]

you have defined a macro where the preprocessor replaces every occurance of TYPE_4_ERROR with (1<<2).
therefore the line

error_number = TYPE_4_ERROR;

becomes

error_number = (1<<2);