Print the information of the current file and the number of current lines in the file for debugging.

C99 supports variable parameter macros.

# Define dbuplint (format, argS ...)/
Fprintf (stderr, format, ## ARGs)
# Define dgbmsg (FMT ,...)/
Printf (FMT ,__ va_args __)

Is correct, of course, the premise is to use a compiler that supports c99 (such as GCC ).

 

The following are two debug statements that print the file, number of lines, and function information.

 

# Define dbg_printffileline () (printf ("[% s: % u] % s/n", _ file __, _ line __, _ function __))

 

# Define dbg_printf (FMT,...) do {/
Dbg_printffileline ();/
Printf (FMT ,__ va_args __);/
} While (0)
 

# Define dbg_printf (FMT, argS...) do {/
Dbg_printffileline ();/
Printf (FMT, # ARGs );/
} While (0)