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ft_strtrim.c
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ft_strtrim.c
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/*Function name ft_strtrim
Prototype char *ft_strtrim(char const *s1, char const *set);
Turn in files -
Parameters s1: The string to be trimmed.
set: The reference set of characters to trim.
Return value The trimmed string.
NULL if the allocation fails.
External functs. malloc
Description Allocates (with malloc(3)) and returns a copy of
’s1’ with the characters specified in ’set’ removed
from the beginning and the end of the string.*/
#include <stdio.h>
#include <stddef.h>
#include <stdlib.h>
#include <string.h>
char *ft_strtrim(char const *s1, char const *set)
{
//Return if the string is NULL
if (s1 == NULL || set == NULL)
return (NULL);
size_t x;
size_t y;
x = 0;
y = x + 1;
char car = *set;
//Find the caracter pointer start
char * start_p = strchr(s1, car);
//Return if the caracter searched is not present
if (start_p == NULL)
return (NULL);
//Find the caracter pointer end
char * end_p = strrchr(s1, car);
//Get number of bytes to allocate
size_t len_array = end_p - start_p;
char *array = (char *)malloc((len_array) *(sizeof(char)));
if (array == NULL)
return(NULL);
while (x < len_array - 1)
{
array[x] = start_p[y];
y++;
x++;
}
array[x] = '\0';
return (array);
}
int main()
{
char *str = "www";
char c = '\0';
char *set = &c;
char *res = ft_strtrim(str, set);
printf("%s\n", res);
return (0);
}