preprocessor question

[Neil Zanella]

Hello,

I would like to have the preprocessor form a string containing the value
of INT_MAX from limits.h but I am fairly certain that this is impossible
using C alone... yes I could call sprintf, but I would have liked some
solution based on the preprocessor, so that I can have my string
literal ready at compile time instead of at run time. Oh well..

Thanks,

Neil

 

[Richard Heathfield]

Hello,

I would like to have the preprocessor form a string containing the value
of INT_MAX from limits.h but I am fairly certain that this is impossible
using C alone... yes I could call sprintf, but I would have liked some
solution based on the preprocessor, so that I can have my string
literal ready at compile time instead of at run time. Oh well..

This is FAQ 11.17. See sig for URL.

(Haven't checked online FAQ. It's in the book copy, for sure.)

 

[Richard Heathfield]

[Sorry if this is a duplicate. God bless KNode...grrr...]

Hello,

I would like to have the preprocessor form a string containing the value
of INT_MAX from limits.h but I am fairly certain that this is impossible
using C alone... yes I could call sprintf, but I would have liked some
solution based on the preprocessor, so that I can have my string
literal ready at compile time instead of at run time. Oh well..

See FAQ 11.17, which describes precisely how to do this. See my sig for the
URL.

 

[Grumble]

I would like to have the preprocessor form a string containing the value
of INT_MAX from limits.h but I am fairly certain that this is impossible
using C alone... yes I could call sprintf, but I would have liked some
solution based on the preprocessor, so that I can have my string
literal ready at compile time instead of at run time. Oh well..

This is Frequently Asked Question number 11.17

http://www.eskimo.com/~scs/C-faq/q11.17.html

(Strike two.)

 

[Eric Sosman]

This is FAQ 11.17. See sig for URL.

(Haven't checked online FAQ. It's in the book copy, for sure.)

Stringizing the macro's definition might not satisfy
the O.P.'s need. The result might be any of "32767",
"0x7fff", "077777", "__intmax", or even stranger strings.