diff options
Diffstat (limited to 'src/ft_printaddr.c')
| -rw-r--r-- | src/ft_printaddr.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/src/ft_printaddr.c b/src/ft_printaddr.c new file mode 100644 index 0000000..8b43ed9 --- /dev/null +++ b/src/ft_printaddr.c @@ -0,0 +1,44 @@ +/* ************************************************************************** */ +/* */ +/* ::: :::::::: */ +/* ft_printaddr.c :+: :+: :+: */ +/* +:+ +:+ +:+ */ +/* By: dkaiser <dkaiser@student.42heilbronn.de +#+ +:+ +#+ */ +/* +#+#+#+#+#+ +#+ */ +/* Created: 2024/03/15 10:33:53 by dkaiser #+# #+# */ +/* Updated: 2024/03/15 12:40:52 by dkaiser ### ########.fr */ +/* */ +/* ************************************************************************** */ + +#include "../ft_printf.h" + +static void printaddr_rec(unsigned long addr, int *len) +{ + char c; + int success; + + if (*len < 0) + return ; + if (addr % 16 < 10) + c = '0' + (addr % 16); + else + c = ('a' - 10) + (addr % 16); + if (addr > 15) + printaddr_rec(addr / 16, len); + if (*len < 0) + return ; + success = write(1, &c, 1); + if (success < 0) + *len = -1; + else + (*len)++; +} + +int ft_printaddr(void *addr) +{ + int len; + + len = write(1, "0x", 2); + printaddr_rec((unsigned long)addr, &len); + return (len); +} |