#define in c

[laopi]

Hi,

I had a head file, looks like
#define MIN_NUM 10
#define MAX_NUM 10


is there any way to get "MAX_NUM" from 10?

thanks.

peter

[Rubberman]

Simple answer? No. Why? Because many #defines may map the value 10 to some symbol. If you need to see what some #define symbol is equal to, then you can print it out, such as:

printf("MIN_NUM == %d, MAX_NUM == %d\n", MIN_NUM, MAX_NUM);

[Cabhan]

Furthermore, #define is actually not part of C. Instead, it is part of the C preprocessor. By the time that your C compiler sees your source code, every instance of MAX_NUM has been replaced with 10.

You could probably write a program that would look at C source code and print out every #define to a certain value, but there is certainly nothing built into C or the preprocessor that does this.