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EXERCISE 00: FT_STRCMP FILE: FT_STRCMP.C

int ft_strcmp(char *s1, char *s2) {

  int i = 0;
  while (s1[i] && s1[i] == s2[i])
      i++;
  return ((unsigned char)s1[i] - (unsigned char)s2[i]);

}

int ft_strcmp(char *s1, char *s2) {

int i = 0;
while (s1[i] && s1[i] == s2[i])
	i++;
return ((unsigned char)s1[i] - (unsigned char)s2[i]);

}

EXERCISE 01: FT_STRNCMP FILE: FT_STRNCMP.C

int ft_strncmp(char *s1, char *s2, unsigned int n) {

  unsigned int i = 0;
  if (n == 0)
      return 0;
  while (s1[i] && s2[i] && s1[i] == s2[i] && i < n - 1)
      i++;
  return ((unsigned char)s1[i] - (unsigned char)s2[i]);

}

int ft_strncmp(char *s1, char *s2, unsigned int n) {

unsigned int i = 0;
if (n == 0)
return 0;
while (s1[i] && s2[i] && s1[i] == s2[i] && i< n-1)
i++;
return ((unsigned char)s1[i] - (unsigned char)s2[i]);

}

EXERCISE 02: FT_STRCAT FILE: FT_STRCAT.C

char *ft_strcat(char *dest, char *src) {

  int i = 0;
  int j = 0;
  while (dest[i])
      i++;
  while (src[j])
  {
      dest[i + j] = src[j];
      j++;
  }
  dest[i + j] = '\0';
  return dest;

}

EXERCISE 03: FT_STRNCAT FILE: FT_STRNCAT.C

char *ft_strncat(char *dest, char *src, unsigned int nb) {

  unsigned int i = 0;
  unsigned int j = 0;
  while (dest[i])
      i++;
  while (src[j] && j < nb)
  {
      dest[i + j] = src[j];
      j++;
  }
  dest[i + j] = '\0';
  return dest;

}

EXERCISE 04: FT_STRSTR FILE: FT_STRSTR.C

char *ft_strstr(char *str, char *to_find) {

  int i, j;

  if (!to_find[0])
      return str;
  i = 0;
  while (str[i])
  {
      j = 0;
      while (str[i + j] && to_find[j] && str[i + j] == to_find[j])
          j++;
      if (!to_find[j])
          return &str[i];
      i++;
  }
  return 0;

} EXERCISE 05: FT_STRLCAT FILE: FT_STRLCAT.C

unsigned int ft_strlen(char *str) {

  unsigned int len = 0;
  while (str[len])
      len++;
  return len;

}

unsigned int ft_strlcat(char *dest, char *src, unsigned int size) {

  unsigned int dest_len = ft_strlen(dest);
  unsigned int src_len = ft_strlen(src);
  unsigned int i = 0;

  if (size <= dest_len)
      return size + src_len;
  while (src[i] && (dest_len + i) < size - 1)
  {
      dest[dest_len + i] = src[i];
      i++;
  }
  dest[dest_len + i] = '\0';
  return dest_len + src_len;

}

unsigned int ft_strlen(char *str) {

unsigned int len = 0;
while (str[len])
	len++;
return len;

}