Question

how to do something like that in eclipse for c

#ifdef _DEBUG printf("debug mode is on\n");
#elif printf("debug mode is off\n");

I googled it and found that I need to use #ifdeb, but unfortunately it didn’t work
thanks in advance for any help

Answer 1

The #ifdef and #elif use the whole line as the condition so the printf s are being interpreted as part of the #if. You need to put the code on separate lines and use a #endif to close the #if

e.g.

#ifdef _DEBUG 
printf("debug mode is on\n");
#else
printf("debug mode is off\n");
#endif