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March 29, 2021

Note: printf

Bon, pour les printfs en C:

#include <inttypes.h>

#define PRIu8 "hu"
#define PRId8 "hd"
#define PRIx8 "hx"
#define PRIu16 "hu"
#define PRId16 "hd"
#define PRIx16 "hx"
#define PRIu32 "u"
#define PRId32 "d"
#define PRIx32 "x" // x -> number in hexadecimal
#define PRIu64 "llu" // or possibly "lu"
#define PRId64 "lld" // or possibly "ld"
#define PRIx64 "llx" // or possibly "lx"
Syntax Description
%zu size_t
%d / %i int
%u unsigned int
%ld long
%lu unsigned long
%lld long long
%llu unsigned long long
%c character
%s a string of characters
%e exponential floating-point number
%f floating-point number
%0.2f floating-point number (like 0.58)
%o octal number (base 8)
%% print a percent sign
\% print a percent sign
- -
%hhn unsigned char *

Finalement, pourquoi on ne mets pas toujours PRIxxx, ça serait plus explicite ...

memo