The former has been deprecated by C++14. They are also the same.

From the standard:

The contents and meaning of the header<cinttypes>are the same as the C
standard library header<inttypes.h>, with the following changes:

-The header<cinttypes>includes the header<cstdint>instead of<stdint.h>,and
—if and only if the typeintmax_tdesignates an extended integer type
 (6.7.1), the following functionsignatures are added:intmax_t
abs(intmax_t);imaxdiv_t div(intmax_t, intmax_t);which shall have the same
semantics as the function signaturesintmax_t imaxabs(intmax_t)andimaxdiv_t
imaxdiv(intmax_t, intmax_t), respectively.
Signed-off-by: Rosen Penev <rosenp@gmail.com>