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feat: add ft_tolower function

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This commit is contained in:
Loïc GUEZO
2025-10-08 10:05:51 +02:00
parent b4d1a32d65
commit 9492262e6b
3 changed files with 27 additions and 5 deletions
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7
ft_strlcat.c Normal file
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@@ -0,0 +1,7 @@
#include "libft.h"
// TODO
// size_t ft_strlcat(char *dst, const char *src, size_t dstsize)
// {
// return (0);
// }

8
ft_tolower.c Normal file
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@@ -0,0 +1,8 @@
#include "libft.h"
int ft_tolower(int c)
{
if ('A' <= c && c <= 'Z')
c += 32;
return (c);
}

17
libft.h
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@@ -56,13 +56,13 @@ size_t ft_strlen(const char *s);
void *ft_memset(void *b, int c, size_t len); void *ft_memset(void *b, int c, size_t len);
/* /*
The bzero() function writes n zeroed The ft_bzero() function writes n zeroed
bytes to the string s. bytes to the string s.
*/ */
void ft_bzero(void *s, size_t n); void ft_bzero(void *s, size_t n);
/* /*
The memcpy() function copies n bytes The ft_memcpy() function copies n bytes
from memory area src to memory area dst. from memory area src to memory area dst.
If dst and src overlap, behavior is If dst and src overlap, behavior is
undefined. Applications in which dst and undefined. Applications in which dst and
@@ -72,7 +72,7 @@ void ft_bzero(void *s, size_t n);
void *ft_memcpy(void *dst, const void *src, size_t n); void *ft_memcpy(void *dst, const void *src, size_t n);
/* /*
The memmove() function copies len The ft_memmove() function copies len
bytes from string src to string dst. bytes from string src to string dst.
The two strings may overlap; the The two strings may overlap; the
copy is always done in a non-destructive copy is always done in a non-destructive
@@ -81,7 +81,7 @@ void *ft_memcpy(void *dst, const void *src, size_t n);
void *ft_memmove(void *dst, const void *src, size_t n); void *ft_memmove(void *dst, const void *src, size_t n);
/* /*
strlcpy() copies up to dstsize - 1 ft_strlcpy() copies up to dstsize - 1
characters from the string src to characters from the string src to
dst, NUL-terminating the result if dst, NUL-terminating the result if
dstsize is not 0. dstsize is not 0.
@@ -91,10 +91,17 @@ size_t ft_strlcpy(char *dst, const char *src, size_t dstsize);
// size_t ft_strlcat(char *dst, const char *src, size_t dstsize); // size_t ft_strlcat(char *dst, const char *src, size_t dstsize);
/* /*
The toupper() function converts a The ft_toupper() function converts a
lower-case letter to the lower-case letter to the
corresponding upper-case letter. corresponding upper-case letter.
*/ */
int ft_toupper(int c); int ft_toupper(int c);
/*
The ft_tolower() function converts
an upper-case letter to the
corresponding lower-case letter.
*/
int ft_tolower(int c);
#endif #endif