Variable Parameter macro

Printing and debugging are inevitable in our development and testing phase. printing information needs to be removed when the release version is generated. We can use Conditional compilation to solve this problem, the specific method is as follows:

# Ifndef DEBUG_2012_06_06
# Define DEBUG_2012_06_06
# Endif

# Ifdef DEBUG_2012_06_06
# Define myPrint (str ,...){\
Printf (str, ##__ VA_ARGS __);\
}
# Else
# Define myPrint (str ,...)
# Endif

In this way, we use our own myPrint macro in the place where the output is printed, just like using the printf function,

To generate the release version, you only need to note # define DEBUG_2012_06_06 to remove all of our print information!