Question

I’m running Linux and frequently find myself wondering what the storage sizes and numeric ranges are for the basic data types (signed/unsigned char, signed/unsigned long, signed/unsigned long double, et cetera).

I’m hoping there’s a little command line program which prints all this, though, if not, I realize that I could build it. (The ascii command, for instance, is very useful for a similar purpose.)

Answer 1

You could just vim through limits.h. For instance, on my machine it starts with:

/* Number of bits in a `char'.  */
#  define CHAR_BIT      8

/* Minimum and maximum values a `signed char' can hold.  */
#  define SCHAR_MIN     (-128)
#  define SCHAR_MAX     127

Or if you feel you need a separate program, build one that simply prints things like: CHAR_BIT, SCHAR_MIN etc.