Is there any difference using {} pair or () pair when define function-like macro in C?

Posted by solotim on Stack Overflow See other posts from Stack Overflow or by solotim
Published on 2010-04-26T09:08:56Z Indexed on 2010/04/26 9:13 UTC
Read the original article Hit count: 107

Filed under:

c

|

preprocessing

For example:

#define FOO(x)     (printf(x))

and

#define FOO(x)     {printf(x)}

It seems that both are viable for preprocessing, but which is better?

Related posts about preprocessing

Django1.1 model field value preprocessing before returning

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, all. I have a model class like this: class Note(models.Model): author = models.ForeignKey(User, related_name='notes') content = NoteContentField(max_length=256) NoteContentField is a custom sub-class of CharField that override the to_python method in purpose of doing some twitter-text-conversion… >>> More
Django model field value preprocessing before returning

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, all. I have a Note model class like this: class Note(models.Model): author = models.ForeignKey(User, related_name='notes') content = NoteContentField(max_length=256) NoteContentField is a custom sub-class of CharField that override the to_python method in purpose of doing some twitter-text-conversion… >>> More
preprocessing directives to prevent a project from release and debug symbols

as seen on Stack Overflow - Search for 'Stack Overflow'
Is there anyway to restrict by using pre-processing directives to prevent a project from compiling when both the Release and Debug symbols are defined? Please let me know. >>> More
C++ preprocessing error in the code

as seen on Stack Overflow - Search for 'Stack Overflow'
#include "iostream" #include "string" using namespace std; #define AA(bb) \ string(::##bb); int main (int argc, char *argv[]) { AA(aa); } This gives me a bunch of errors but I am trying to understand this error pre.cpp:11:1: error: pasting "::"… >>> More
After preprocessing the line

as seen on Stack Overflow - Search for 'Stack Overflow'
After preprocessing the line j=a(i+1); will be: j=(i+1*i+1); which when evaluated for i=3 will give j=7: j=(3+1*3+1); >>> More

Developer IT

Is there any difference using {} pair or () pair when define function-like macro in C? - Developer IT

Is there any difference using {} pair or () pair when define function-like macro in C?

c

preprocessing

Related posts about c

Related posts about preprocessing

Django1.1 model field value preprocessing before returning

Django model field value preprocessing before returning

preprocessing directives to prevent a project from release and debug symbols

C++ preprocessing error in the code

After preprocessing the line

Categories cloud