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42 Seoul3

[42 Seoul] ft_printf ํ”„๋กœ์ ํŠธ ๋ชฉํ‘œ: ์‹ค์ œ printf์˜ ๋ชจ๋ฐฉ ํ•จ์ˆ˜์ธ ft_printf๊ฐ€ ํฌํ•จ๋œ ๋ผ์ด๋ธŒ๋Ÿฌ๋ฆฌ libftprintf.a ์ƒ์„ฑ ํ”„๋กœ์ ํŠธ ์š”๊ตฌ ์‚ฌํ•ญ: Makefile์„ ์‚ฌ์šฉํ•˜๋˜ ์ตœ์†Œํ•œ all, clean, fclean, re ๊ทœ์น™์„ ํฌํ•จํ•ด์•ผ ํ•œ๋‹ค. ์„ ํ–‰ ์ง€์‹ 1. ๊ฐ€๋ณ€ ์ธ์ˆ˜ ํ•จ์ˆ˜ [์Šค์นด์›ƒ C์–ธ์–ด ๊ฐ•์ขŒ] 31-1 ๊ฐ€๋ณ€ ์ธ์ˆ˜ ํ•จ์ˆ˜๋ž€? [์Šค์นด์›ƒ C์–ธ์–ด ๊ฐ•์ขŒ] 31-1 ๊ฐ€๋ณ€ ์ธ์ˆ˜ ํ•จ์ˆ˜๋ž€? ๋จธ๋ฆฌ๋ง ์•ˆ๋…•ํ•˜์„ธ์š”. Programog๋ฅผ ... blog.naver.com ๊ฐ€๋ณ€ ์ธ์ž ํ•จ์ˆ˜ ๋งŒ๋“ค๊ธฐ #include #include // va_list, va_start, va_arg, va_end๊ฐ€ ์ •์˜๋œ ํ—ค๋” ํŒŒ์ผ void printNumbers(int args, ...) // ๊ฐ€๋ณ€ ์ธ์ž์˜ ๊ฐœ์ˆ˜๋ฅผ ๋ฐ›์Œ, ...๋กœ ๊ฐ€๋ณ€ ์ธ์ž ์„ค์ • { va_.. 2021. 6. 26.
[42 Seoul] Netwhat ํ”„๋กœ์ ํŠธ ๋ชฉํ‘œ: ๋„คํŠธ์›Œํฌ๋ฅผ ์ดํ•ดํ•˜๊ณ  ๋‚ด๋ถ€ ์ž‘๋™์— ๋Œ€ํ•ด ๋ฐฐ์šธ ์ˆ˜ ์žˆ๋‹ค. ํ”„๋กœ์ ํŠธ ์š”๊ตฌ ์‚ฌํ•ญ: ๋„คํŠธ์›Œํฌ ๊ด€๋ จ ์˜จ๋ผ์ธ ํ€ด์ฆˆ๋ฅผ ํ’€์–ด์•ผ ํ•œ๋‹ค. Netwhat ์—ฐ์Šต ๋ฌธ์ œ๋ฅผ ํ’€์–ด๋ณด๊ณ  ๊ด€๋ จ ๋‚ด์šฉ์„ ์ •๋ฆฌํ•˜๋ ค ํ•œ๋‹ค. 1. IP Address 1-1) IPv4์™€ IPv6 IP address ๋ž€? ์ง€๊ธˆ ๋‚˜๋Š” ํ™๋Œ€์˜ ํ•œ ์นดํŽ˜์—์„œ ์ด ๊ธ€์„ ์ •๋ฆฌ ์ค‘์ด๋‹ค. ์ด ์นดํŽ˜์˜ IPv4 ์ฃผ์†Œ๋Š” 172.30.1.12 ๋‹ˆ๊นŒ, ์ด IP๋Š” Bํด๋ž˜์Šค์ž„์„ ์•Œ ์ˆ˜ ์žˆ๋‹ค. ์—ฌ๊ธฐ์„œ ๋„คํŠธ์›Œํฌ ์ฃผ์†Œ๋Š” 172.30 ๊นŒ์ง€๊ณ , 1.12๋Š” ๋‚˜๋งŒ์˜ ํ˜ธ์ŠคํŠธ ์ฃผ์†Œ์ด๋‹ค. velog.io Q. What is the size of an IPv4 address? - 128 bits - 32 bits - 64 miles - 16 bits - 8 bits - 64 bytes - 128.. 2021. 6. 2.
[42 Seoul] Libft ํ”„๋กœ์ ํŠธ ๋ชฉํ‘œ: ์•ž์œผ๋กœ ์‚ฌ์šฉํ•  ์—ฌ๋Ÿฌ ์œ ์šฉํ•œ ํ•จ์ˆ˜๋“ค์„ ์ง์ ‘ ๋งŒ๋“ค๊ณ  ๊ทธ๊ฒƒ๋“ค์ด ๋“ค์–ด์žˆ๋Š” libft.a๋ผ๋Š” ๋ผ์ด๋ธŒ๋Ÿฌ๋ฆฌ ์ƒ์„ฑ ํ”„๋กœ์ ํŠธ ์š”๊ตฌ ์‚ฌํ•ญ: Makefile์„ ์‚ฌ์šฉํ•˜๋˜ ์ตœ์†Œํ•œ all, clean, fclean, re ๊ทœ์น™์„ ํฌํ•จํ•ด์•ผ ํ•œ๋‹ค. (bonus ๊ทœ์น™๋„ ํฌํ•จ) Part 1 - Libc Functions Libc(C ํ‘œ์ค€ ๋ผ์ด๋ธŒ๋Ÿฌ๋ฆฌ) ํ•จ์ˆ˜๋“ค์„ ์›๋ณธ๊ณผ ๊ฐ™์€ ํ˜•์‹์˜ ํ”„๋กœํ† ํƒ€์ž…์œผ๋กœ ์„ ์–ธํ•˜์—ฌ ์žฌ๊ตฌํ˜„ํ•ด์•ผ ํ•œ๋‹ค. ์ด๋•Œ, ํ•จ์ˆ˜์˜ ์ด๋ฆ„ ์•ž์—๋Š” "ft_"๋ฅผ ๋ถ™์—ฌ์•ผ ํ•œ๋‹ค. ์žฌ๊ตฌํ˜„ํ•  Libc ํ•จ์ˆ˜ ๋ฆฌ์ŠคํŠธ ๋ฉ”๋ชจ๋ฆฌ ๊ด€๋ จ ํ•จ์ˆ˜: memset, bzero, memcpy, memccpy, memmove, memchr, memcmp, calloc ๋ฌธ์ž์—ด ๊ด€๋ จ ํ•จ์ˆ˜: strlen, strlcpy, strlcat, strchr, strr.. 2021. 5. 27.